Question

find the product of (x + 2 )(x + 8)​

Answer 1

Answer:

(x+2)(x+8)

=> x² + 8x + 2x + 16

=> x² + 10x + 16

Answer 2

Answer:

$(x + 2) \: (x + 8) \\ x {}^{2} + 8x + 2x + 16 \\ x ^{2} + 10x + 16 = 0 \\ x {}^{2} + 2x + 8x + 16 = 0 \\ x(x + 2) + 8(x + 2) = 0 \\ (x + 2)(x + 8) = 0 \\ x + 2 = 0 \: or \: x + 8 = 0 \\ x = - 2 \: or \: x = - 8$