Witam
Oblicz:
a) (x-2x3)2=
b) (sqrt3x+1)2=c)(sqrt2x-1)(sqrt2x+1)=
a+b)^2=a^2+2ab+b^2
(a-b)^2=a^2-2ab+b^2
(a-b)(a+b)=a^2-b^2
a)
(x - 2x^3)^2 = x^2 - 2*x*2x^3 + (2x^3)^2 = x^2 - 4x^4 + 4x^6
b)
(V3x + 1)^2 = (V3x)^2 + 2*V3x*1 + 1^2 = 3x^2 + 2V3x + 1
c)
(V2x - 1)(V2x + 1) = (V2x)^2 - 1^2 = 2x^2 -1
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a+b)^2=a^2+2ab+b^2
(a-b)^2=a^2-2ab+b^2
(a-b)(a+b)=a^2-b^2
a)
(x - 2x^3)^2 = x^2 - 2*x*2x^3 + (2x^3)^2 = x^2 - 4x^4 + 4x^6
b)
(V3x + 1)^2 = (V3x)^2 + 2*V3x*1 + 1^2 = 3x^2 + 2V3x + 1
c)
(V2x - 1)(V2x + 1) = (V2x)^2 - 1^2 = 2x^2 -1