(3x-4)(2x^2-5x+1) - (2x -1)(3x^2+7x-5)
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Answer:
-15x-12x^2-9
Step-by-step explanation:
(3x-4)(2x^2-5x+1)-(2x-1)(3x^2+7x-5)
={3x×(2x^2+5x+1)-4×(2x^2-5x+1)}-{2x×(3x^2+7x-5)-1×(3x^2+7x-5)}+-
={(6x^3+15x+3x)-(8x^2+20x-4)}-{(6x^3+7x^2-10x)-(3x^2+7x-5)}
={6x^3+15x+3x-8x^2-20x-4}-{6x^3+7x^2-10x-3x^2-7x+5}
=6x^3-2x-8x^2-4-6x^3-4x^2+17x-5
= -15x-12x^2-9
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ucfeivucfeive s e e e. e e e e
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