ROZWIĄŻ RÓWNANIA ZA POMOCĄ PROPORCJI !!!
1. 2x -3 1 + 2x
_____ = _____ 4 3 2. x +2 2
____ = ____
2x 5 3. x x - 3
____ = _____
x+2 x
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3(2x-3)=4(1+2x)
6x-9=4+8x
-2x=13
x= -6,5
5(x+2)=4x
5x+10=4x
x= -10
x²=(x+2)(x-3)
x²=x²-3x+2x-6
x = -6