Wzorki to :
[tex](a+b)^2 = a^2 + 2ab + b^2\\(a-b)^2 = a^2 - 2ab +b^2[/tex]
Podstawiamy : [tex]a) (x+y)^2 = x^2 + 2xy + y^2 \\\\b) (z+5)^2 = z^2 + 10z + 25\\\\c)(2x+7)^2 = 4x^2 +28x +49\\\\d)(c-d)^2 = c^2 - 2cd+d^2\\\\e)(3-x)^2 = 9 - 6x + x^2 \\\\f)(5y-z)^2 = 25y^2 - 10y+y^2\\[/tex]Pozdrawiam
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Wzorki to :
[tex](a+b)^2 = a^2 + 2ab + b^2\\(a-b)^2 = a^2 - 2ab +b^2[/tex]
Podstawiamy :
[tex]a) (x+y)^2 = x^2 + 2xy + y^2 \\\\b) (z+5)^2 = z^2 + 10z + 25\\\\c)(2x+7)^2 = 4x^2 +28x +49\\\\d)(c-d)^2 = c^2 - 2cd+d^2\\\\e)(3-x)^2 = 9 - 6x + x^2 \\\\f)(5y-z)^2 = 25y^2 - 10y+y^2\\[/tex]
Pozdrawiam