👤

Sagot :

ARWA1949

exercice 2

3/7x=4

x=4÷3/7

x=4×7/3

x=28/3

(x-√7)(x+9)=0

x-√7=0 ou x+9=0

x=√7 ou x=-9

3x-8=12-7x

3x+7x=12+8

10x=20

x=20/10

x=2

x²-9x=0

x(x-9)=0

x=0 ou x-9=0

x=0 ou x=9

x/2+4=x/6+5

3x/6+24/6=x/6+30/6

3x+24=x+30

3x-x=30-24

2x=6

x=6/2

x=3

x³-5x=0

x(x²-5)=0

x=0 ou x²-5=0

x=0 ou x²=5

x=0 ou x=√5 ou x=-√5

x+1/5+3x-4/3=4x-7/15

3x+3/15+15x-20/15=4x-7/15

3x+3+15x-20=4x-7

18x-17=4x-7

18x-4x=-7+17

14x=10

x=10/14

x=5/7

x²-6x+9=0

(x-3)²=0

x-3=0

x=3

2(x-1)²+(2x-5)(x-1)=0

(x-1)(2(x-1)+(2x-5))=0

(x-1)(2x-2+2x-5)=0

(x-1)(4x-7)=0

x-1=0 ou 4x-7=0

x=1 ou 4x=7

x=1 ou x=7/4

View image ARWA1949
View image ARWA1949

Other Questions

© 2024 IDNLearn. All rights reserved.