Questions on Algebra: Divisibility and Prime Numbers answered by real tutors!

Tutors Answer Your Questions about Divisibility and Prime Numbers (FREE)

Question 12938: Did I factor this correctly?...I have no idea how to do this so I guessed.

I factored that to:
Thank you
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Question 58066: Wright an equasion and solv to answer each question.
Seven times a number decreased by 2 is 19. What is the number.
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Question 62457: find two prime numbers that, if multiplied, woild generate a 400-digit number
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Question 62718: Find the GCF of 6, 18, and 30.
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Question 62715: Find the GCF for 32 and 37.
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Question 63103: 7x^2 -175
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Question 63633: please help me to divdie :
4x^3 + 3 by a - 1 and check
thank u
Click here to see answer by stanbon(57347)

Question 63944: please help solve
factor out the greatest ommon factor. Simplify if possible.
5(2-x)^2-(2-x)^3+4(2-x)

Click here to see answer by funmath(2925)

Question 64112: please help me solve
factor the trinomial
-6m^2-13m+15
i keep getting
(m+3)(-6m+5) the answer says -(6m-5)(m+3)
Click here to see answer by Earlsdon(6287)

Question 64110: please help solve
factor by grouping
4+xy-2y-2x
i am not sure how you know how to pair them up
Click here to see answer by Earlsdon(6287)

Question 63855: Divide 3x^3 - 5 by x - 1 and check

Click here to see answer by ankor@dixie-net.com(15652)

Question 64129: please help me to divide the following :
3x^3 - 5 by x - 1 and check
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Question 64277: Find the prime factorization of 40
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Question 64789: please help solve
Factor by grouping
r^2-9TW+3RW-3RT
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Question 64804: please help.
factor the trinomial
-p^2=12p+27
having trouble when there is a negative number involved
Click here to see answer by Earlsdon(6287)

Question 64804: please help.
factor the trinomial
-p^2=12p+27
having trouble when there is a negative number involved
Click here to see answer by venugopalramana(3286)

Question 64924: Find two prime numbers that, if multiplied, would generate a 400-digit number.
Click here to see answer by stanbon(57347)

Question 64788: please help solve
factor each polynomial twice. Once with a positive coefficient and then use a common factor of a negative coefficient.
-T^4+8T^3-12T
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Question 64787: please help solve
factor out the greatest common factor
1) 6k^3-36k^4+48k^5
2) 3(5-x)^4+2(5-x)^3-(5-x)^2
Click here to see answer by stanbon(57347)

Question 65032: please help
factor each trinomial
49z^2-42z+9 the answer is (7z-3)^2 how in the world do they come up with that?
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Question 65028: PLEASE HELP SOLVE
FACTOR EACH POLYNOMIAL
Z^3-125P^3
Click here to see answer by venugopalramana(3286)

Question 65038: please help solve
a box with no top is to be constructed from a piece of cardboard whose length measures 6in. more than its width. The box is to be formed by cutting squares that measure 2in. on each side from the four corners, and then folding up the sides. If the volume of the box will be 110in.^3 what are the dimensions of the piece of cardboard?
Click here to see answer by venugopalramana(3286)

Question 65037: solve each equation
1) 6x^3-13x^2-5x=)
2) 5(3a-1)^2+3=-16(3a-1)
Click here to see answer by funmath(2925)

Question 65052: PLEASE HELP SOLVE
FACTOR THE POLYNOMIAL
1) X^2+10X+25
FACTOR EACH TRINOMIAL
1) 4(M-5)^2-4(M-5)-15
Click here to see answer by funmath(2925)

Question 65051: PLEASE HELP SOLVE
FACTOR BY GROUPING
1) 2AB^2-8B^2+A-4
FACTOR THE POLYNOMIAL
1) (H+P)^2-9
Click here to see answer by funmath(2925)

Question 65036: solve each equation
1) x^2+x-12=0
2) 2a^2-8a=0
Click here to see answer by benni1013(197)

Question 65056: PLEASE HELP SOLVE CANT FIGURE OUT
SOLVE THE EQUATION
2A^2-8A=0
Click here to see answer by cristiana(10)

Question 65056: PLEASE HELP SOLVE CANT FIGURE OUT
SOLVE THE EQUATION
2A^2-8A=0
Click here to see answer by tutorcecilia(2152)

Question 65034: please help solve
factor each polynomial
1) 9-a^2+2ab-b^2
2) 64m^2-25n^2
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Question 65035: factor each polynomial
x^2-2xy+y^2-4
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Question 65027: PLEASE HELP SOLVE
FACTOR EACH POLYNOMIAL
1) (H+K)^2-9
2) X^2+10X+25
Click here to see answer by venugopalramana(3286)

Question 65055: PLEASE HELP SOLVE
FACTOR EACH POLYNOMIAL
1)10R^2+13R-3
2) 40P-32R
3)9-A^2+2AB-B^2
Click here to see answer by funmath(2925)

Question 64790: please help solve
1) factor by grouping 2ab^2-8b^2+a-4
2) Factor the trinomial k^2-11k+30
Click here to see answer by funmath(2925)

Question 58067: Wright an equasion and solv to answer each question.
Seven times a number decreased by 2 is 19. What is the number.
Click here to see answer by 303795(595)

Question 55700: Please help factor 36^2+4
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Question 52177: HOmework worksheet.
the question is,
one number is 5 bigger than another number. Give 3 examples of what the two numbers can be.
the answer i came up with was
83,78,73
im confused i don't if i did it right
please help me
joey

Click here to see answer by 303795(595)

Question 28863: The GCf of two numbers is 850. Neither number is divisible by the other. What is the smallest that these two numbers could be?
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Question 20943: whats the answer to this question: February the third is a prime day because the month and day (2/3) are represented by prime numbers. how many prime days are there in a leap year?
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Question 16645: write each of the following as a product of primes (a)1800 (b) 900 (c) 450
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Question 15211: hi
i need the divisibility tes for 12 and 26, or help with my problem im doing in math "You need to find a salary for a new employee and you want to pay him an even dollar amount between $23,000 and $24,000 that can be paid by every two weeks (26 times a year) or monthly (12 times a year)you want each payment to be an exact dallor amount" this came from passport to mathmatics, book 2, 1999 edition. Pg. 116 #17
thank you
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Question 12062: WHAT IS THE HIGHEST NUMBER THAT DIVIDES 245 AND 1029 BY GIVING A REMAINDER OF 5.
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Question 10704: In the decimal of 5/13 what would be the 534th decimal

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Question 9118: 245 divided by 15=.............16 1/3, 15r.5, 16.2 or .06 r.30? thank you very much!!!!!!!!!!!

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Question 12878: what is the smallest number that is divisible dy four different primes?
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Question 12880: what is the smallest number that is divisible dy four different primes?
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Older solutions: 1..45, 46..90, 91..135, 136..180, 181..225, 226..270, 271..315, 316..360, 361..405, 406..450, 451..495, 496..540, 541..585, 586..630, 631..675, 676..720, 721..765, 766..810, 811..855, 856..900, 901..945, 946..990, 991..1035, 1036..1080, 1081..1125, 1126..1170, 1171..1215, 1216..1260, 1261..1305, 1306..1350, 1351..1395, 1396..1440