Question

x² + 8x + 15 = 0
solve by completing square
method​

Answer 1

Answer:

the answer for the equation is X=-3,-5

Answer 2

Solution :

$\large \tt \implies {x}^{2} + 8x + 15 = 0 \\ \\ \large \tt \implies {x}^{2} + 3x + 5x + 15 = 0 \\ \\ \large \tt \implies x(x +3) + 5(x + 3) = 0 \\ \\ \large \tt \implies(x + 5)(x +3) = 0 \\ \\ \large \tt \implies x + 5 = 0 \\ \\ \large \implies \boxed{ \tt x = - 5} \\ \\\large \tt \implies x + 3 = 0 \\ \\ \large\implies \boxed{ \tt x = - 3}$