2.3 Exercises

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Övning 2.3:1

Kvadratkomplettera följande uttryck

a) \displaystyle x^2-2x b) \displaystyle x^2+2x-1 c) \displaystyle 5+2x-x^2 d) \displaystyle x^2+5x+3

Övning 2.3:2

Lös följande andragradsekvationer med kvadratkomplettering

a) \displaystyle x^2-4x+3=0 b) \displaystyle y^2+2y-15=0 c) \displaystyle y^2+3y+4=0
d) \displaystyle 4x^2-28x+13=0 e) \displaystyle 5x^2+2x-3=0 f) \displaystyle 3x^2-10x+8=0