Question

X2-2x=63
What is the value of x?

Answer 1

Answer:

x = 9 / -7

Step-by-step explanation:

${x}^{2} - 2x = 63 \\ = > {x}^{2} - 2x - 63 = 0 \\ = > {x}^{2} - 9x + 7x - 63 = 0 \\ = > (x - 9) + 7(x - 9) = 0 \\ = > (x - 9)(x + 7) = 0 \\ = > x = 9 \: or \: - 7$

Answer 2

Step-by-step explanation:

x2-2x = 63

x2-2x-63=0

x2-9x+7x-63=0

x(x-9)+7(x-9) =0

(x-9) ×( x+7) =0

x=9, -7