The product of (5x^2 + 2x - 3)(x - 1)?

2008-01-22 1:07 pm

Thanks.

回答 (5)

2008-01-22 2:00 pm

✔ 最佳答案

5x^3 + 2x² - 3x
____-5x^2 - 2x + 3

5x^3 - 3x² - 5x + 3

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2008-01-22 1:33 pm

5x^3 + 2x^2 - 3x - 5x^2 - 2x + 3
=
5x^3 -3x^2 - 5x + 3

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2008-01-22 1:14 pm

(5x^2 + 2x - 3)(x - 1)
= 5x^3 + 2x^2 - 3x - 5x^2 - 2x + 3
= 5x^3 + 2x^2 - 5x^2 - 3x - 2x + 3
= 5x^3 - 3x^2 - 5x + 3

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2008-01-22 2:22 pm

(5x^2 + 2x - 3)(x - 1)
=( 5x^3 + 2x^2 - 3x - 5x^2 - 2x + 3)
= (5x^3 + 2x^2 - 5x^2 - 3x - 2x + 3)
= (5x^3 - 3x^2 - 5x + 3)

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2008-01-22 1:13 pm

(a + b - c)(d - e) = ad - ae + bd - be - cd + ce

Take it from here, it is just multiplying out brackets.

Good Luck,

Kempos

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