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The expression $x^2 + 13x + 30$ can be written as $(x + a)(x + b),$ and the expression $x^2 + 5x - 50$ written as $(x + b)(x - c)$, where $a$, $b$, and $c$ are integers. What is the value of $a + b + c$?

 Mar 30, 2020
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I think the answer is 8

 

(x+3)(x+10) and (x+10)(x-5)

 

a=3

b=10

c=-5

 Mar 30, 2020

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