решить - раскрыть по формуле (a+b)^2=a^2+2ab+b^2
(x-3)^2=
(y+5)^2=
(2x-1)^2=
(x+2)^2=
(x-4)^2=
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решить - раскрыть по формуле (a+b)^2=a^2+2ab+b^2
(x-3)^2=
(y+5)^2=
(2x-1)^2=
(x+2)^2=
(x-4)^2=
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Answers & Comments
1) x^2 -6x+9.
2)y^2+10y+25.
3)4X^2-4X+1.
4)X^2+4X+4.
5) X^2-16X+16
(x-3)^2=x^2-2*3*x+(-3)^2=x^2-6x+9
(y+5)^2=y^2+2*5*y+5^2=y^2+10y+25
(2x-1)^2=(2x)^2-2*2x*1+(-1)^2=4x^2-4x+1
(x+2)^2=x^2+2*2*x+2^2=x^2+4x+4
(x-4)^2=x^2-2*4*x+(-4)^2=x^2-8x+16