Question

x2- 40x +400= 0solve it by factorization
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Answer 1

Answer:

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Step-by-step explanation:

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Answer 2

GIVEN

X²-40X +400=0

Let the roots be a and b.

a+b = 40 and ab = 400

a = b= 20 satisfies.

X²- 20X - 20X - 400=0

(X-20)(X-20) = 0

(X-20)²=0

X=20

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