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multiply and simplify: 10x(9x^2 + 6x + 7) A. 90x^2 + 60x + 70 B. 9x^2 + 16x + 7 C. 90x^3 + 60x^2 + 70x D. 90x^3 + 130x
10x(9x^2+6x+7)=90x^3+60x^2+70x
She took My answer and left.. I hate people who do that.