2.2 Exercises

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Övning 2.2:1

Lös ekvationerna

a) \displaystyle x-2=-1 b) \displaystyle 2x+1=13
c) \displaystyle \displaystyle\frac{1}{3}x-1=x d) \displaystyle 5x+7=2x-6
Svar
Svar 2.2:1
Lösning a
Lösning 2.2:1a
Lösning b
Lösning 2.2:1b
Lösning c
Lösning 2.2:1c
Lösning d
Lösning 2.2:1d

Övning 2.2:2

Lös ekvationerna

a) \displaystyle \displaystyle\frac{5x}{6}-\displaystyle\frac{x+2}{9}=\displaystyle\frac{1}{2} b) \displaystyle \displaystyle\frac{8x+3}{7}-\displaystyle\frac{5x-7}{4}=2
c) \displaystyle (x+3)^2-(x-5)^2=6x+4 d) \displaystyle (x^2+4x+1)^2+3x^4-2x^2=(2x^2+2x+3)^2
Svar
Svar 2.2:2
Lösning a
Lösning 2.2:2a
Lösning b
Lösning 2.2:2b
Lösning c
Lösning 2.2:2c
Lösning d
Lösning 2.2:2d
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