Question

$x(x + 1) + 8 = (x + 2)(x - 2)$
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Answer 1

Answer:

$x(x + 1) + 8 = (x + 2)(x - 2) \\ \\ {a}^{2} - {b}^{2} = (a + b)(a - b) \\ \\ {x }^{2} + x + 8 = {x}^{2} - {2}^{2} \\ \\ {x}^{2} + x + 8 = {x}^{2} - 4 \\ \\ x + 8 = 4 \\ \\ x = 4 - 8 \\ \\ x = - 4$

Answer 2

Heya...

Answer:

x(x+1) + 8 = (x+2)(x-2)

x2 + x + 8 = x2- 2x + 2x - 4

x = -4 -8

x = -12

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