Question

factorise it fast


x²+x-72​

Answer 1

x²+x-72

=x²+9x-8x-72

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

=(x-8)(x+9)

=x=8,-9

Answer 2

Step-by-step explanation:

${x}^{2} + 8x - 9x - 72 \\ \\ x(x + 8)9(x + 8) \\ (x + 8)(x + 9) \\ x = - 8 \\ x = - 9$