# 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 385912: Sir i have tried a few different methods to solve this algebra problem, but im not geeting the right answer my answer is different than the answer in the book please help me. thanks IF X=5A^3-3B^3, Y=4A^2B-7AB^2+2B^3, Z=4A^3-5A^2+3AB^2, FIND THE VALUE OF X+2Y+3Z THANKS AGAIN Click here to see answer by mananth(12270)

 Question 385868: Determine whether the function is a polynomial function. If it is, state the degree, if it is not, tell why not. f(x)=3-7/x (7 over x) Click here to see answer by robertb(4012)

 Question 385993: What is the volume of a cube with a surface area of 48ft^2? Click here to see answer by nerdybill(6962)

 Question 386131: Solve the system of equations below by graphing them with a pencil and paper. Enter your answer as an ordered pair. y = -3x + 1 y = -x + 5 Click here to see answer by Alan3354(30993)

 Question 386313: The problem is: Solve the equation for x ..... (x-4)^2=2x^2-3x+20 I've tried to solve it but get stuck towards the end. The last answer i get to is... x^2-11x+36 but i can't find numbers to factor it. I'm not sure if i have done it right to that point Click here to see answer by stanbon(57361)

 Question 386401: Please help me: 1)If polynomial p(x)=2x^3 -3x^2-10 has exactly one real zero r, -1<=r<=1, which following is true: A. -1 less than r and r less than 0 B. 0 less than r and r less than 1 C. Other answer( Explain) 2. Which of the shaded regions below represent the graph of {(x,y)(y<=x and y>=0)}? Big Thanks Click here to see answer by solver91311(16897)

 Question 386352: Factor completely: 4a2b3 + ab4 - 4ab4 - b5 Click here to see answer by robertb(4012)

 Question 386336: Use the process of factoring by grouping to factor the polynomial: 15n(squared)-20n+12n-16 Click here to see answer by mananth(12270)

 Question 386463: How do you solve A to the sixth power plus 1 Click here to see answer by Alan3354(30993)

 Question 386588: Factor the following expression into a product of two binomials: 4x^2-32x+64 Click here to see answer by ewatrrr(10682)

 Question 386590: Factor the following expression into a product of binomials: 64y2 – 49z2 Click here to see answer by ewatrrr(10682)

 Question 386589: Factor the following expression into a product of binomials: 64x2 – 176xy + 121y2 Click here to see answer by ewatrrr(10682)

 Question 386582: Factor out the greatest common factor from the expression 14yz3 + 28xy2z – 7y2z2 Click here to see answer by Fombitz(13828)

 Question 386545: I need help in factoring these 2 problems. I still cannot grasp this and keep missing steps. Could you please show the steps. I am preparing for a quiz tomorrow. Thank you so much. Factor these problems 1) 3x^3 – 48xy^2 2) 7x^2 + 5x – 2 3) 3x^2 + 24x + 48 Click here to see answer by Fombitz(13828)

 Question 386539: Hello , I need help with some polynomials. As much as I study and practice I still don't get this. I keep missing some steps. Could you please include the steps so I can see where I am messing up on these.Thank you. I need to factor each problem. 1) 6x^4y^5z^2 – 18x^4y^6z^4 + 24x^2y^5z^3 2) 16x^2 – 9 Click here to see answer by ankor@dixie-net.com(15656)

 Question 386585: Megan factored the expression 28x^2+x-15 as (4x-3)(7x+5). But when Jacob applied the FOIL principle and multiplied out (4x-3)(7x+5), he got 28x^2-x-15; thus, Megan’s solution does not appear to check. Why is that? Please help Megan to understand this better. Explain your reasoning and correctly factor the original expression, if possible. If the expression is prime, so state. Click here to see answer by Fombitz(13828)

 Question 386776: Please help me with these problems. I need help with the steps to getting the answer.I am studying for a test tomorrow.Thank you for your help. Solve for X x- 7 )(5x + 2) = 0 X^2 + 3x – 28 = 0 Click here to see answer by mananth(12270)
 Question 386776: Please help me with these problems. I need help with the steps to getting the answer.I am studying for a test tomorrow.Thank you for your help. Solve for X x- 7 )(5x + 2) = 0 X^2 + 3x – 28 = 0 Click here to see answer by stanbon(57361)

 Question 386780: Hello. Could someone please show me what the steps are to solve these problems ? Solve for X X^2 – 12 = -4x X^2 – 81 = 0 Thank you so much. Click here to see answer by mananth(12270)

 Question 386785: I have a word problem to solve but not sure if I did it right. I may have used the wrong formula. Please show me the correct formula steps to solving this question?......................I got the answer 4 x 9 but do not think it is correct. The area of a rectangle is 14 square meters. Find the length and width of the rectangle if its length is 5 meters greater than its width. Use an equation and the formula for the Area of a rectangle= (width)(length). Click here to see answer by stanbon(57361)
 Question 386785: I have a word problem to solve but not sure if I did it right. I may have used the wrong formula. Please show me the correct formula steps to solving this question?......................I got the answer 4 x 9 but do not think it is correct. The area of a rectangle is 14 square meters. Find the length and width of the rectangle if its length is 5 meters greater than its width. Use an equation and the formula for the Area of a rectangle= (width)(length). Click here to see answer by solver91311(16897)
 Question 386785: I have a word problem to solve but not sure if I did it right. I may have used the wrong formula. Please show me the correct formula steps to solving this question?......................I got the answer 4 x 9 but do not think it is correct. The area of a rectangle is 14 square meters. Find the length and width of the rectangle if its length is 5 meters greater than its width. Use an equation and the formula for the Area of a rectangle= (width)(length). Click here to see answer by rapaljer(4667)

 Question 386942: A 100-ft diagonal brace on a bridge connects a support of the center of the bridge to a side support on the bridge. The horizontal distance that it spans is 20 ft longer that the height that it reaches on the side of the bridge. Find the horizontal and vertical distances spanned by this brace Click here to see answer by mananth(12270)

 Question 386958: 1/2x=22 I don't understand how to solve this then show a check. Click here to see answer by mananth(12270)

 Question 386935: Can't seem to understand? any help? Factor the following expression into a product of binomials: 64x2 – 176xy + 121y2 Click here to see answer by stanbon(57361)

 Question 386951: Use the “difference of squares” rule to factor the following expression: 25b6-36c4 Click here to see answer by tara0066(31)