Rozwiąż jedno równanie : 2x(x-1)=2(x-1)(x+3).... Question from @ewa2707698

November 2018 2 10 Report

Rozwiąż jedno równanie : 2x(x-1)=2(x-1)(x+3)

kukur1 2x^2-2x=2(x^2+3x-x-3)
2x^2-2x=2x^2+4x-6
-2x-4x=-6
-6x=-6 /:(-6)
x=1

1 votes Thanks 1

krysta $2x(x-1)=2(x-1)(x+3)\\ \\2x^{2}-2x=2(x^2+3x-x-3)\\ \\2x^{2}-2x=2x^2+6x-2x-6 \\ \\2x^{2}-2x-2x^2-6x+2x=-6\\ \\-6x=-6/:(-6)\\ \\x=1$

2 votes Thanks 1

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