Question

I need help factoring for example: a^2 + 10a - 24

Answer 1

$a^{2} + 10a - 24$

$= (a - 2)(a+12)$


Note :
Remember this formulas :
$x^{2} +bx+c = (x+p)(x+q)$

when :
$p \cdot q = c\,\,\,\,\,\,and\,\,\,\,\,\,p+q =b$

Answer 2

$a^2 + 10a - 24=\\ a^2-2a+12a-24=\\ a(a-2)+12(a-2)=\\ (a+12)(a-2)$