Równanie - znajdź x(x - 5) *(x + 2) - (3 - x)*(2 - x) = x - 12
Proszęo szybką odpowiedź
(x²+2x-5x-10) - (6-3x-2x+x²)= x- 12
x²-3x-10 - (6-5x+x²) = x- 12
x² - 3x - 10 - 6 + 5x - x² = x - 12
x= 4
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(x²+2x-5x-10) - (6-3x-2x+x²)= x- 12
x²-3x-10 - (6-5x+x²) = x- 12
x² - 3x - 10 - 6 + 5x - x² = x - 12
x= 4