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Expansion of (x+a)(x+b)

Solve using i...

Question

Solve using identity
3-12x^2

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Solution

Dear Student,
3-12x²
=3 ( 1-4x²)
=3[ 1² - (2x)² ] [ as we know that a² - b² = (a+b) (a-b)]
=3(1+2x)(1-2x)

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