niech mi ktoś pomoże proszę...
zastosuj wzory skróconego mnożenia
a)
b)
c)
d)
(5x+2)^2=25x^2+20x+4
(5-2x)^3=125-3*25*2x+3*5*4x^2-8x^3=125-150x+60x^2-8x^3
(2V3+V5)^2=4*3+4V3*V5+5=12+4V15+5=17+4V15
(1/2-x)(1/2+x)=1/4-x^2
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a)
b)
c)
d)
(5x+2)^2=25x^2+20x+4
(5-2x)^3=125-3*25*2x+3*5*4x^2-8x^3=125-150x+60x^2-8x^3
(2V3+V5)^2=4*3+4V3*V5+5=12+4V15+5=17+4V15
(1/2-x)(1/2+x)=1/4-x^2