Question

3. Factorise : x2 – 2x - 80​

Answer 1

Answer:

X2– 10x +8x -80

x(x-10) + 8(x-10)

(x+8) (x-10)

x = - 8 or x = 10

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Answer 2

Step-by-step explanation:

x² - 2x - 80

= x² - 10x + 8x - 80

= x(x - 10) + 8(x - 10)

= (x + 8)(x - 10)