Question

x square - 15 X + 56​

Answer 1

x2 - 15x + 56

x2 - 8x - 7x +56

x(x-8)-7(x-8)

(7x-7)(x-8)

Answer 2

Given Equation

$x^{2} - 15 x + 56 = 0$

=> $x^{2} - 7x - 8x + 56 = 0$

=> $x(x - 7) - 8(x - 7 ) = 0$

=> $(x-7)(x-8) = 0$

∴ x = 7, 8