How do you factor $a^2 + 7a - 30$ ?

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Answer 1 · 2018-05-16T02:11:56

$(a+10)(a-3)$

You have to find two factors ( $x$ and $y$ ), where

$x+y= +7" "$ and where $" "x*y = 30$

$a^2 + 10a - 3a + 30$

Then take the common factor out.

$a(a + 10) - 3(a+10)$

$(a-3)(a+10)$

How do you factor a^2 + 7a - 30a^2 + 7a - 30?