найдите корни квадратного трехчлена:
1) x^2+4x-5 ;
2) x^2-14x-15;
3) - x2+4x+12;
4) 2x^2+3x-5.
1) x^2+4x-5 ;
2) x^2-14x-15;
3) - x2+4x+12;
4) 2x^2+3x-5.
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Answers & Comments
Ответ:
1.= (x+5)*(x-1)
2.= x(x-29)
3.= -2(-x-6)
4.= (2x+5)*(x-1)