If A=3x2+5x-6and B=-2x2-6x+7then A-B equals

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Ducky

Mathematics

7 December, 16:01

If A=3x2+5x-6and B=-2x2-6x+7then A-B equals

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Aisha Taylor · Answer 1

Let's simplify step-by-step. 3 x^2 + 5x - 6 - ( - 2 x^2 - 6x + 7) Distribute the Negative Sign: = 3 x^2 + 5x - 6 + - 1 ( - 2 x^2 - 6x + 7) = 3 x^2 + 5x + - 6 + - 1 ( - 2 x^2) + - 1 ( - 6x) + (-1) (7) = 3 x^2 + 5x + - 6 + 2 x^2 + 6x + - 7 Combine Like Terms: = 3 x^2 + 5x + - 6 + 2 x^2 + 6x + - 7 = (3 x^2 + 2 x^2) + (5x + 6x) + (-6 + - 7) = 5 x^2 + 11x + - 13 Answer: = 5 x^2 + 11x - 13