Question

Find the product of 9xsquare - x+ 15 and x square -x-1

Answer 1

(9x² - x + 15) (x²-x-1)

9x²(x²-x-1) - x(x²-x-1) + 15(x²-x-1)

9x⁴ - 9x³ - 9x² - x³ + x² + x + 15x² - 15x -15

9x⁴ - 10x³+ 7x² - 14x - 15

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