Wykonaj działania i przedstaw w najprostrzej postaci:
5x+1 4x² -3
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2x -1 2x²+7x- 3
3x 2x-1
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4x-2 9x²
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a) 2x^2+7x -3=2(x-1/2)(x+3)=(2x-1)(x+3)
delta=49-24=25
x1= -3
x2= -1/2
zał x=/1/2 x=/ -3
5x+1 - 4x^2 - 3
2x-1 (2x-1)(x+3) do wspólnego mianownika
(5x+1)(x+3) - 4x^2 - 3
(2x-1)(x+3) (2x-1)(x+3)
5x^2+x+15x+3 - 4x^2 - 3
(2x-1)(x+3) (2x-1)(x+3)
5x^2+16x+3 - 4x^2 + 3
(2x-1)(x+3)
x^2+16x+6
(2x-1)(x+3)
b)x=/ 1 i x=/0
3 x 2x - 1 skracamy
2(2x-1) 3x*3x
1 1
2 3x
1
6x