Question

x ^ 2 + x - 72 factorise the following expressions​

Answer 1

Answer:

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Answer 2

Answer:

(x - 8) (x + 9)

Step-by-step explanation:

x² + x - 72

= x² + 9x - 8x - 72

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

= (x - 8) (x + 9)

Steps involved :

1. Middle Term Split
2. Split the middle term in such a manner that its product is the product of the coefficient of x² and constant term and its sum is the middle term itself.

Thanks !