Question

$x {}^{2} + x - 72$
factorise​

Answer 1

Answer:

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

Answer 2

Answer:

°• Hence x= 8 and x= -9.

Step-by-step explanation:

x² +x -72 .

x² +9x -8x -72 .

➡Taking common ↗

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

(x-8) (x+9)

➡Let's the value of both zeroes ↗

°• x= 8 and x= -9. ✓

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