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sum of the coefficients when two quadratics are multiplied

It's easy to figure it out! Just assume x=1 and evaluate the given expression. That's it.

Example: Sum of the coefficients of: ( 3x^2 +4x + 1) ( x^2 + 2x +5) is just (3 + 4 + 1)( 1 + 2 + 5) = 64. We needn't expand the polynomial

Note by Raghunathan N.
2 years, 4 months ago

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