Rozwiąż równania:
a.3x-{4x-[5x-(6x-7)]}=11
b.(x-1)²+(x-2)²-(x-3)²-(x-4)²=100
3x[-4x(-x+7)]=11
3x-5x+7=11
-2x=4 x=-2
x²-2x+1+x²-4x+4-x²+6x-9-x²+8x-16=100
8x-20=100
8x=120 x=15
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a.3x-{4x-[5x-(6x-7)]}=11
3x[-4x(-x+7)]=11
3x-5x+7=11
-2x=4 x=-2
b.(x-1)²+(x-2)²-(x-3)²-(x-4)²=100
x²-2x+1+x²-4x+4-x²+6x-9-x²+8x-16=100
8x-20=100
8x=120 x=15