Question

Find the products :(f) (9x^2-x+15) x (x^2-x-1)

Answer 1

(9x²-x+15)*(x²-x-1)

=9x²(x²-x-1)-x(x²-x-1)+15(x²-x-1)

=9x^4-9x³-9x²-x³+x²+x+15x²-15x-15

=9x^4-10x³+7x²-14x-15

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