# Questions on Algebra: Evaluation of expressions, parentheses answered by real tutors!

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 Algebra: Evaluation of expressions, parentheses Solvers Lessons Answers archive Quiz In Depth

 Question 366195: 8x - 9x +2(-3x - 4) if x= -8 Click here to see answer by ichudov(499)

 Question 367643: Hi, I can't seem to find the number of fencing needed to the question below. Help please? Find how many feet of fencing it will take to surround a yard measuring 12 feet by 15 feet? Thank You!! Click here to see answer by Fombitz(13828)

 Question 368096: Write a verbal expression for each algebraic expression. 81+2x Click here to see answer by robertb(4012)
 Question 368096: Write a verbal expression for each algebraic expression. 81+2x Click here to see answer by nyc_function(2733)

 Question 368253: Here is the question: 16(3x+2)^3+12(3x+2)^2-88(3x+2) Answer: 12x(3x+2)(12x+19) I cannot figure out how to get the 19! Click here to see answer by jim_thompson5910(28704)

 Question 368593: (3x3)3 is equivalent to: 9x9 you do distrubute properties. 3(3x3)=(3x3)x(3x3) which is 9x9 Click here to see answer by emileyzing(4)

 Question 368777: Evaluate the expression for 2m+n where m = -3 and n = -6 Click here to see answer by rfer(12727)

 Question 368768: Evaluate the expression for mn where m=2/5 and n=1/2 Click here to see answer by rfer(12727)

 Question 368782: ok this is a statement that i need help on m: The statement is a(n) ??? Click here to see answer by robertb(4012)

 Question 369199: i cant seem to figure out how to solve this problem on my study guide for my math test. Find all numbers for which the rational expression is undefined: x+3/(x+2)(x+5) Click here to see answer by lefty4ever26(59)

 Question 369390: Micah wanted to buy a new iPod. He has \$250 but must save 3% of it for his little brother's birthday present. What is the most expensive Ipod he can buy given the state tax on ipods is 7%? Click here to see answer by mananth(12270)

 Question 370110: x^2 - 4x / x^2 - 5x - 36 simplify the given rational expression completely. Click here to see answer by jsmallt9(3296)

 Question 370171: If the expression -6w-5/4w+3 is to make sense,the values that w can take must be restricted.State the restriction on w Click here to see answer by Fombitz(13828)

 Question 370186: Express as a single fraction in lowest terms -4+4w-8u/7w+6w+3u/2w Click here to see answer by unlockmath(1614)

 Question 370323: Let : U = {1, 2, 3, 4, 5, 6, 7, 8} A = {1, 2, 4, 5, 8} B = {2, 3, 4, 6} A ∪ B′ this is all that I got. I donot understand. B’ = {1,5,7,8}numbers not in b Click here to see answer by Fombitz(13828)

 Question 370388: I am having problems with evaluating expression, especially in a fraction and even worse in check to determine if my answer is correct. Here is one I am having problems with: 4(2z-3)/7 = 3z-11 (this is 4(2z-3) over 7 Thank you and can you show me how to properly check my answer. Click here to see answer by stanbon(57953)

 Question 369973: I was wondering if you can help me with this following equation to make it true by inserting one or more parentheses, I tried so many that i just end up with fractions.The equation is -5 exponent2+7/2/-11+2 * -1 exponent2-2=1 i tried [(-5)exponent2 +7/2]/-11+2*[(-1)exponent2-3] didn't equal 1 I keep getting 1.7777 where else should i put more parentheses? Click here to see answer by scott8148(6628)

 Question 371109: Classify the number as prime, composite, or neither. 1 Click here to see answer by Fombitz(13828)

 Question 371838: a=3,b=-2,c=-1,d=0,e=2,x=-4,y=2,z=6 1.a^2(b-c)^2 2. a^e+by+cx 3.(xyz)^2-(abc)^2 I don't get what variable or constant to apply an exponent? Click here to see answer by robertb(4012)

 Question 371900: According to the order of operations, what should be done first when evaluating this expression? Please do not solve. Write one of these: add, divide, evaluate the exponent, multiply, simplify inside the parentheses, or subtract. 3 ∙ 2^4 – 5 Click here to see answer by lostdiver(4)

 Question 372090: Evaluate 5x for each value of x. x=0.3 Click here to see answer by ewatrrr(10682)

 Question 372755: Why does the following not have a solution? √(x+3) = -2 Click here to see answer by Fombitz(13828)

 Question 373220: My friend is having trouble with this problem. She needs to see how it is worked out with the answer. [6.2-(0.4-5)][-3.02-(5-4.2) Click here to see answer by rfer(12727)

 Question 373777: 5a-(a+b)-[2a-b-(3a+5b)] I don't understand how to do this problem. Click here to see answer by ewatrrr(10682)

 Question 373779: (48a+b)-(-22a-6b) how do i do this? do I take it like this: (48a+22a)-(b-6b) and how does it become 70a+9b? Click here to see answer by Fombitz(13828)