zad 7 str 101 matematyka kl 1 gimnazjum operon a)2x(x-5)+3(x do potęgi drugiej-2)+(x+4) do potęgi drugiej - 2 (x- 2)(x+2) = b) 4 (3-x do potęgi drugiej) + 4 ( x - 1) do potęgi drugiej - 3x (2 - x ) + (3 - x )(3 +x) =
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a)2x(x-5)+3(x^2-2)+(x+4)^2 - 2 (x- 2)(x+2) = 2x^2-10x+3x^2-6+x^2+16x+16-2x^2-4x+4x-4=
4x^2+6x+6
b) 4 (3-x^2) + 4 ( x - 1)^2 - 3x (2 - x ) + (3 - x )(3 +x) = 12-4x^2+4x^2+4x+4-6x+3x^2+9+3x-3x+x^2=-2x^2-2x+25
^2- do potęgi drugiej