Questions on Algebra: Polynomials, rational expressions and equations answered by real tutors!

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 Algebra: Polynomials, rational expressions and equations Solvers Lessons Answers archive Quiz In Depth

 Question 157936: SOMEONE HELP PLEASE: y varies jointly as a and b and inversely as the square root of c. y = 48 when a = 4, b =8, and c = 36. Find y when a = 2, b = 7, and c = 16. Click here to see answer by vleith(2825)

 Question 158034: Find a polynomial whose zeros are: - 2, multiplicity 2; 4, multiplicity 1; degree 3 Click here to see answer by Alan3354(30993)

 Question 158062: Find the value for k that will make 4x^2+6.4x +k a perfect square. Click here to see answer by nabla(475)
 Question 158062: Find the value for k that will make 4x^2+6.4x +k a perfect square. Click here to see answer by Edwin McCravy(8908)

 Question 158076: 2c^2+10c-48= I don't understand can yo show me some examples? Thanks, Chance Click here to see answer by jim_thompson5910(28593)
 Question 158076: 2c^2+10c-48= I don't understand can yo show me some examples? Thanks, Chance Click here to see answer by Earlsdon(6287)

 Question 158066: Simplify (12x^2y^8z^7/ 4x^9y^8z^4)^3 I got originally a whole different answer than the ones to choose from...... Click here to see answer by checkley77(12569)

 Question 157688: 7.08x^6 + 4.15x^3 - 9.6 = 0 Is it possible to factor this equation? I would really appreciate the help. Thanks Click here to see answer by Alan3354(30993)

 Question 158100: Solve the equation 1/4y-1=1/9y Simplify and solve the equation (x/4x-16)-8=1/x-4 Solve for k -5/7k+-5/6=7-(-8/5k) Solutions; 1.) given: 1/4y-1=1/9y Sol: 1/4y-1/9y=1 9-4=36y y=5/36 Ans: y=5/36 2.) Given: (x/4x-16)-8=1/x-4 Sol: 1/4-16-8=1/x-4 1/4-24+4=1/x 1/4-20=1/x x/4-20x=1 x-5x=4 x=-1 Ans: x=-1 3.) Given: k-5/7k+-5/6=7-(-8/5k) Sol: k-5/7k-5/6=7+8/5k k-5/7k-8/5k=5/6+7 6(35k-25k-56k)=35(5+42) 6(-46k)=1645 k=-1645/276 Ans: k=-1645/276 Click here to see answer by quizan_jp(1)

 Question 158103: Find the value for k that will make 4x^2+6.4x +k a perfect square. Click here to see answer by nerdybill(6958)

 Question 158110: CAN SOMEONE PLEASE HELP ME WITH THIS PROBLEM: LET R(x)= x^3-2x^2-7 / x^2 + 1 WHAT KIND(S) OF ASYMPTOTES DOES R(x) possess? 1. a single horizontal asymptote 2. a slant asymptote and a horizontal asymptote 3. a single slant asymptote 4 R(x) has no asymptotes Click here to see answer by jim_thompson5910(28593)

 Question 158003: determine the constant that should be added to the binomial so that it becomes a perfect square trinomial. Then write and factor the trinomial. x^2-4x a. 16; x^2-4x+16=(x-4^2 b. -4; x^2-4x-4=(x-2)^2 c. -16; x^2-4x-16=(x-4)^2 d. 4; x^2-4x+4=(x-2)^2-x^4 Click here to see answer by jim_thompson5910(28593)

 Question 158112: CAN SOMEONE PLEASE HELP ME WITH THIS PROBLEM: WHAT IS THE EQUATION OF THE SLANT ASYMPTOTE FOR 1. R(x) = x - 1 2. R(x) = 1 3. R(x) = x + 17 4. There is no slant asymptote Click here to see answer by Edwin McCravy(8908)

 Question 158067: - 3/x + 10 = x - 10/25 Click here to see answer by midwood_trail(310)

 Question 158037: Solve the given equation. - 3/x + 10 = x - 10/25 Click here to see answer by atique.ah(26)

 Question 158325: 2, 1. Need Help! Express this following rational expressions in lowest terms, please... x OVER x + xy thank you. Click here to see answer by checkley77(12569)

 Question 158326: Express this following rational expressions in lowest terms, please: 3x^2 + 6x OVER 3x^2 + 9x thank you. Click here to see answer by checkley77(12569)

 Question 158328: 2, 4 Express this following rational expressions in lowest terms, please! 4x^2 - 12x - 40 OVER 2x^2 - 16x + 30 wow... need help! thanks. Click here to see answer by scott8148(6628)

 Question 158324: Consider the fractional problem: x - 8 OVER x + 5 divided by x - 9 OVER x + 4 Explain to me why -5, 9 and -4 are not allowable replacements for the variable x. thank you very much. Click here to see answer by scott8148(6628)

 Question 158327: 2,3 Express this following rational expressions in lowest terms, please: x^2 + 2x + 1 OVER x + 1 thank you. Click here to see answer by checkley77(12569)

 Question 158516: step by step on how to solve a rational equation 1/5 + 1/x = 1/2 Click here to see answer by jojo14344(1512)

 Question 158540: I need help with this multiplication: 3x over 2y * y^2 over 6 = ? Thank you for your help. Click here to see answer by stanbon(57337)

 Question 158541: Please help me with this one, thank you so much. it's multiplication, I need to express the results in the lowest terms... 6x^5 y^3 OVER 5z^3 MINUS 6x^4 OVER 5yz^4 = ? Thank you! Click here to see answer by gonzo(654)