SOLUTION: Write each product as a polynomial: Solve and Check: {{{ (2s-1)(s+2)=(s-4)(2s+5) }}}

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: Write each product as a polynomial: Solve and Check: {{{ (2s-1)(s+2)=(s-4)(2s+5) }}}       Log On


   

Question 816130: Write each product as a polynomial:
Solve and Check: +%282s-1%29%28s%2B2%29=%28s-4%29%282s%2B5%29+
Answer by TimothyLamb(4379) About Me  (Show Source):
You can put this solution on YOUR website!
(2s - 1)(s + 2) = (s - 4)(2s + 5)
2ss + 4s - s - 2 = 2ss + 5s - 8s - 20
2ss + 3s - 2 = 2ss - 3s - 20
3s - 2 = -3s - 20
6s = -18
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s = -3
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check:
(2s - 1)(s + 2) = (s - 4)(2s + 5)
s = -3
(-6 - 1)(-3 + 2) = (-3 - 4)(-6 + 5)
(-7)(-1) = (-7)(-1)
7 = 7
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