(2x^4+ x^3 - 8x^2 +6x - 3) - (6x^4 - 8x^2 + 2x)?

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(2x^4+ x^3 - 8x^2 +6x - 3) - (6x^4 - 8x^2 + 2x)?

2006-12-01 05:07:41 · 2 answers · asked by Little Birdie 2 in Science & Mathematics ➔ Mathematics

2 answers

(2x^4 + x³ - 8x² + 6x - 3) + [-1(6x^4 - 8x² + 2x)]
= 2x^4 + x³ - 8x² + 6x - 3 - 6x^4 + 8x² - 2x
= -4x^4 + x³ + 4x - 3

2006-12-01 05:24:53 · answer #1 · answered by Anonymous · 0⤊ 0⤋

The only trick here is that minus sign outside of the second bracket. All you have to do is distribute that, and then it's a matter of combining like terms.

2x^4 + x^3 - 8x^2 + 6x - 3 - 6x^4 + 8x^2 - 2x

-4x^4 + x^3 + 4x - 3

2006-12-01 13:11:36 · answer #2 · answered by Puggy 7 · 0⤊ 0⤋