3. Factorise : x2 – 2x - 80
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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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Answered by
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Step-by-step explanation:
x² - 2x - 80
= x² - 10x + 8x - 80
= x(x - 10) + 8(x - 10)
= (x + 8)(x - 10)
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