Question

factories

5. 20x3 - 40x2 + 80x​

Answer 1

Hi the answer is

Explanation :-

20= 2×2×5×X×X×X

40= 2×2×2×5×X×X

80= 2×2×2×2×5×X

Can be written as

=> x^2 + 2X - 3

=> x^2 + (3-1)X - 3

=> x^2 + 3X - X - 3

=> x(x+3) - 1(x+3)

=> (x-1), (x+3) are the factors

=> x= - 3, 1

HENCE PROOVED

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