Question

this is the correct answer for 5th question​

Answer 1

Answer:

${x}^{2} - 10x + 9 \\ = {x}^{2} - 9x - x + 9 \: \: \: \: \: \: \: \: \: \\ = x(x - 9) - 1(x - 9) \\ = (x - 1)(x - 9) \: \: \: \: \: \: \: \: \: \: \: \: \\ x = 1 \: \: \: \: \: \: or \: \: \: \: \: x = 9$

Answer 2

Step-by-step explanation:

x^2 -10x+9

= x^2-1x-9x+9

= x(x-1)-9(x-1)

=(x-1)(x-9)