4x²-16=0 27(x-3)³=-64
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4x²-16=0 27(x-3)³=-64
4x²-16=0 27(x-3)³=-64
4x²-16=0 27(x-3)³=-64
4x^2-16=0
4x^2=16
x^2=4
x=±2
27(x-3)³=-64
[3(x-3)]³=-4^3
3(x-3)=-4
x-3=-4/3
x=3-4/3
x=5/3