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Elizabeth0505
@Elizabeth0505
July 2022
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Помогите решить уравнения:
1. х^2/4 - х/6=1,75
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sharninalika123
Х^2/4-х/6=1,75
х^2/4-х/6=7/4 |×12
3х^2-2х=3×7
3х^2-2х=21
3х^2-2х-21=0
Д=в^2×4ас
Д=4-4×3×(-21)=256
х1=-в+корень Д
х1=2+16/6=3
х2=-в-корень Д
х2=2-16/6=-7/3=-2 1/3
ответ:3 ; -2 1/3
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Answers & Comments
х^2/4-х/6=7/4 |×12
3х^2-2х=3×7
3х^2-2х=21
3х^2-2х-21=0
Д=в^2×4ас
Д=4-4×3×(-21)=256
х1=-в+корень Д
х1=2+16/6=3
х2=-в-корень Д
х2=2-16/6=-7/3=-2 1/3
ответ:3 ; -2 1/3