05Jan

Gggggggggggggggggggрешите

Нюшка96 Алгебра 1 15

Gggggggggggggggggggрешите

Posted by Нюшка96 | Posted at Jan 05, 2014 | Categories: Алгебра

Answers

Puet49
Puet49

1 x≠4,x≠-1 (2x-7)(x+1)-(x+2)(x-4)=x+6 2x²+2x-7x-7-x²+4x-2x+8-x-6=0 x²-4x-5=0 x1+x2=4 U x1*x2=-5 x1=-1 не удов усл и x2=5 2 x≠0,x≠-2 5x*x-20=4*(x+2) 5x²-20-4x-8=0 5x²-4x-28=0 D=16+560=576 x1=((4-24)/10=-2 не удов усл x2=(4+24)/10=2,8

Jan 05, 2014 08:05

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