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ljolja1713
@ljolja1713
July 2022
1
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Решите уравнение:
(2x-1)*(x+4)=2x+8
* - это умножение
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Answers & Comments
Miraslava1816
(2x-1)*(x+4)=2x+8
2x²+8x-x-4-2x-8=0
2x²+5x-12=0
a=2;b=5;c=-12
D=25-4*2*(-12)=25+96=121,√121=11
x1=-5-11/2*2=-16/4=-4
x2=-5+11/2*2=6/4=1,5
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Answers & Comments
2x²+8x-x-4-2x-8=0
2x²+5x-12=0
a=2;b=5;c=-12
D=25-4*2*(-12)=25+96=121,√121=11
x1=-5-11/2*2=-16/4=-4
x2=-5+11/2*2=6/4=1,5