write the coefficient of x square in (4+4xsquare) (3xsquare-5)
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(4+4x^2) (3x^2 - 5)
= 12x^2 - 20 + 12x^4 - 20x^2
= 12x^4 - 8x^2 - 20
So,
Coficient of x^2 = -8
= 12x^2 - 20 + 12x^4 - 20x^2
= 12x^4 - 8x^2 - 20
So,
Coficient of x^2 = -8
gaurav2013c:
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