Question

Factorise
${x}^{2} - x - 72$
​

Answer 1

Explanation:

x^2-x-72=x^2-9x+8x-72

=x(x-9)+8(x-9)

=(x-9)(x+8)

Answer 2

Answer:

x²-x-72

x²-8x+9x-72

x(x-8)+9(x-8)

(x+9)(x-8)

x=8 or -9