решить x во 2-ой степени -2.4x - 13 =0...

olushinaoksana @olushinaoksana

July 2022 1 5 Report

решить x во 2-ой степени -2.4x - 13 =0

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ShirokovP

Verified answer

X^2 - 2.4x - 13 = 0 /*5
5x^2 - 12x - 65 = 0
D = 144 + 4*65*5 = 1444
√D = 38

x1 = ( 12 + 38)/10 = 50/10 = 5
x2 = (12 - 38)/10 = - 26/10 = - 2,6

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