SOLUTION: 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

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: 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      Log On


   

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




Found 2 solutions by mananth, stanbon:
Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
(x- 7 )(5x + 2) = 0
..
for the equation to be =0
either (x-7) =0
OR 5x+2=0
if x-7 = 0
x=7
..
If 5x+2=0
-2 -2
5x=-2
/5
x=-2/5
x=7 OR -2/5
X^2 + 3x – 28 = 0
x^2+7x-4x-28
x(x+7)-4(x+7)=0
(x+7)(x-4)=0
x=-7 OR x=4
...
m.ananth@hotmail.ca

Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
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
If that product is zero, one of
those factors must be zero.
Solve: x-7 = 0 or 5x+2 = 0
x = 7 or x = -2/5
----------------------------

X^2 + 3x – 28 = 0
Factor to get:
(x+7)(x-3) = 0
Solve: x+7 = 0 or x-3 = 0
x = -7 or x = 3
===========================
Cheers,
Stan H.