верно ли равенство 4k^2=7k+7.5...

artemeroh @artemeroh

July 2022 1 4 Report

верно ли равенство 4k^2=7k+7.5

Answers & Comments

kayan $4 k^{2}=7k+7.5$
$4 k^{2} -7k-7.5=0
$
D=49+120=169
$x1= \frac{7+13}{8} = \frac{20}{8} = \frac{5}{4}$
$x2= \frac{7-13}{8} = \frac{-6}{8} = \frac{-3}{4}$

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