Zapisz w postaci sumy algebraicznej:
a) (x+4)2 <--do której potęgi
b)(3-4y)2
c) (3+2y)3
d) (8y3-1)
a) (x+4)2=x^2+2*x*4+4^2=x^2+8x+16
b)(3-4y)2=3^2-2*3*4y+(4y)^2=9-24y+16y^2
c) (3+2y)3=3^3+3*3^2*2y+3*3*(2y)^2+(2y)^3=27+3*9*2y+9*4y^2+8y^3=27+54y+36y^2+8y^3
d)(8y3-1)= (2y-1)(4y2+2y+1)
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a) (x+4)2=x^2+2*x*4+4^2=x^2+8x+16
b)(3-4y)2=3^2-2*3*4y+(4y)^2=9-24y+16y^2
c) (3+2y)3=3^3+3*3^2*2y+3*3*(2y)^2+(2y)^3=27+3*9*2y+9*4y^2+8y^3=27+54y+36y^2+8y^3
d)(8y3-1)= (2y-1)(4y2+2y+1)