Question

factorise the expressions x square +x-72​

Answer 1

===> x² + x - 72

===> x² + 9x - 8x - 72

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

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

x + 9 = 0 ; x - 8 = 0

==> x = -9 ; x = 8

Answer 2

Answer:

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