Question

solve this equation by factorisation xsquare -8x+16=0

Answer 1

$x^2 - 8x + 16 = 0$

Sum = -8; Product = 16

Therefore, numbers are -4 and -4

[tex] x^{2} - 4x - 4x +16 = 0 [/tex]

$x - 4 = 0$
$(x-4)(x-4) = 0$

[tex]x(x - 4) - 4(x-4) = 0 [/tex]

Therefore, x = 4

Answer 2

${x}^{2} - 4x - 4x + 16 = 0 \\ x(x - 4) - 4(x - 4) = x - 4 = 0 \\ x - 4 = 0 \\ x = 4$
hope this helps you quickly