5x(в квадрате)-12x+7=0. Created by Slloy. algebra-ru

5x(в квадрате)-12x+7=0...

Slloy @Slloy

July 2022 2 5 Report

5x(в квадрате)-12x+7=0

poknpol А=5 7в=12 с=7 D=B-4ac D=5²-4*5*7=25-140=115

3 votes Thanks 3

LydiaNyan A=5; b= -12; c= 7

D=b^2-4ac
D=-12^2-4*5*7
D= 144-140= 4

x1= -в+ корень из D/2a
x1= 12 + 2/2*5
x1= 14/10
x1= 1,4

x2= -b- корень из D/2a
x2= 12 - 2/2*5
x2=10/10
x2=1

Ответ: x1=1,4, x2=1

2 votes Thanks 3

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