Factorise: 2x^2+3x-2?

2009-12-26 10:08 am

Factorise: 2x^2+3x-2

回答 (5)

2009-12-26 10:11 am

✔ 最佳答案

2x^2 + 3x - 2
= 2x^2 + 4x - x - 2
= (2x^2 + 4x) - (x + 2)
= 2x(x + 2) - 1(x + 2)
= (x + 2)(2x - 1)

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2009-12-26 3:24 pm

2x^2+3x-2 find factors of -2 which will give you a +3 for the middle term and a -2 for the constant

(2x-1)(x+2)

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2009-12-26 11:06 am

( 2x - 1 ) ( x + 2 )

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2009-12-26 10:44 am

2x^2 + 3x - 2
= 2x^2 + 4x - x - 2
= (2x^2 + 4x) - (x + 2)
= 2x(x + 2) - 1(x + 2)
= (x + 2)(2x - 1)

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2009-12-26 10:42 am

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

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