Question

$x {}^{2} - 8x - 20 = 0$
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Answer 1

x^2 -8x -20

by factorization method

x^2 -10x + 2x -20

x(x-10) + 2(x-10)

(x+2) (x-10)

x = -2 and x = 10

Answer 2

Answer:

x=10 or x=-2

Step-by-step explanation:

$x ^{2} - 10x + 2x - 20 = 0 \\ x(x - 10) + 2(x - 10) \\ (x - 10)(x + 2) = 0 \\( x - 10 )= 0 \: or \: (x + 2) = 0 \\ x = 10 \: or \: x = - 2$