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роман693
@роман693
October 2021
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NadDer
Ответ получается 5. решение нужно?
(3х-14)*(6х+10) = (х+3)*(4х+15)
18х²+30х-84х-140 = 4х²-15х+12х-45
18х²-4х²-54х+3х -140+45 = 0
14х²-51х-95 = 0
D = 2601+ 5320 = 7921 (89)
х = (51+89)/28 = 5
х2<0
Ответ:5
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Answers & Comments
(3х-14)*(6х+10) = (х+3)*(4х+15)
18х²+30х-84х-140 = 4х²-15х+12х-45
18х²-4х²-54х+3х -140+45 = 0
14х²-51х-95 = 0
D = 2601+ 5320 = 7921 (89)
х = (51+89)/28 = 5
х2<0
Ответ:5