5. multiply 9x^2(2x^2 8x) a) 18x^4 72x^3 b) 18x^2 72x^3 c) 11x^4 - 17x^3 d) 90x^4

1 answer:

4 0

9x^2(2x^2 + 8x) = 18x^4 + 72x^3

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