temat: kwadrat sumy i roznicy dwoch wyrazen przedstaw w postaci kwadratu sumy dwoch wyrazen x^2+2x+1= x^2+4x+4= x^2+6x+9=
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x^2+2x+1 = (x+1)^2
x^2 +4x +4 = (x+2)^2
x^2 +6x +9 =(x+3)^2