4xdo 2(x+4)-x(x+4)=0
(x+4)(4x²-x)=0
(x+4)x(4x-1)=0
x(x+4)(4x-1)=0
x=0 x+4=0 4x-1=0
x=-4 x=1/4
9xdo 2(xdo2-4)-49(xdo2-4)=0
(x²-4)(9x²-49)=0
a²-b²=(a-b)(a+b)
(x-2)(x+2)(3x-7)(3x+7)=0
x=2 x=-2 x=7/3 x=-7/3
xdo2(x-pierwiastek z 2)-2(x- pierwiastek z 2)=0
(x-√2)(x²-2)=0
x²-2 -----> a²-b²=(a-b)(a+b)
(x-√2)(x-√2)(x+√2)=0
x=√2 x=√2 x=-√2
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4xdo 2(x+4)-x(x+4)=0
(x+4)(4x²-x)=0
(x+4)x(4x-1)=0
x(x+4)(4x-1)=0
x=0 x+4=0 4x-1=0
x=-4 x=1/4
9xdo 2(xdo2-4)-49(xdo2-4)=0
(x²-4)(9x²-49)=0
a²-b²=(a-b)(a+b)
(x-2)(x+2)(3x-7)(3x+7)=0
x=2 x=-2 x=7/3 x=-7/3
xdo2(x-pierwiastek z 2)-2(x- pierwiastek z 2)=0
(x-√2)(x²-2)=0
x²-2 -----> a²-b²=(a-b)(a+b)
(x-√2)(x-√2)(x+√2)=0
x=√2 x=√2 x=-√2