a) (√2-x)²- (2x-1)(2x+1) dla x=√2b) (x-3)² + √5(2x+√5)(√5-2x) dla x=√3
a)2-V2X+X^2-(4X^2-1)=
2-2V2X+X^2-4X^2+1=PODSTAWIAM
2-2V2*V2+V2^2-4V2^2+1=
2-2*2+2-4*2+1=2-4+2-8+1=-7
b)x^2-6x+9+v5(5-4x^2)=
x^2-6x+9+5V5-4V5x^2=
V3^2-6v3+9+5v5-4v5v3^2=
3-6v3+9+5V5-4V5*3=12-6v3+5v5-12v5=12-6v3-7v5=
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a)2-V2X+X^2-(4X^2-1)=
2-2V2X+X^2-4X^2+1=PODSTAWIAM
2-2V2*V2+V2^2-4V2^2+1=
2-2*2+2-4*2+1=2-4+2-8+1=-7
b)x^2-6x+9+v5(5-4x^2)=
x^2-6x+9+5V5-4V5x^2=
V3^2-6v3+9+5v5-4v5v3^2=
3-6v3+9+5V5-4V5*3=12-6v3+5v5-12v5=12-6v3-7v5=