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Q: How do you factor 5x2 plus 4x - 1?

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-5x2+9x-4 -5x2+9x+-4 Factors of -20 that add to equal 9 are -5 and-4 -5x2+5x+4x+-4 -5x(1x+1) + 4x(1+-1x)

5x2 + 3x - 1 does not have rational factors.

As written, -5x + 9x = 4x 4x - 4 = 4(x - 1) If that's -5x2 + 9x - 4, that factors to -(x - 1)(5x - 4)

It is 4x^2 + 10x - 1

4x + 16 + 1 = 4x + 17 which cannot be factorised.

5x2-46x+9 = (5x-1)(x-9)

4x(10x + 1)

It is: 4x(1+4)

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

OK. 4x2 + 4x + 1 = (2x + 1)2

4x2 + 1 + x2 + 3 = 5x2 + 4

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

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