Oblicz ! WYRAŻENIA ALGEBRAICZNE /-pierwiastek ^-potęga A)(2x^3+3x+7)-(5x^3-4x+6)= B)(2xy+3,5x^2)-(-1 1/2X^2+5xy)+10= c)-(4x-5x^2-9-(-5x^2+4x+4= D)(y^2+2b^2y^2+4by^3)-(-3y^4+6bby^3+13b^2y^2)= E)(5m+8)+(4-7m)-(m-5)-(20+4m)=

A) (2x³+3x+7)-(5x³-4x+6) = 2x³+3x+7-5x³+4x-6 = -3x³+7x+1 B) (2xy+3,5x²)-(-1,5x²+5xy)+10 = 2xy+3,5x²+1,5x²-5xy+10 = 5x²-3xy+10 C) -(4x-5x²-9)-(-5x²+4x+4) = -4x+5x²+9+5x²-4x-4 = 10x²-8x+5 D) (y²+[latex]2b^{2y}^{2}[/latex]+4by³)-(-3y⁴+6by³+[latex]13b^{2y}^{2}[/latex]) = y²+[latex]2b^{2y}^{2}[/latex]+4by³+3y⁴-6by³-[latex]13b^{2y}^{2}[/latex] = 3y⁴+y²-2by³-[latex]11b^{2y}^{2}[/latex] E) (5m+8)+(4-7m)-(m-5)-(20+4m) = 5m+8+4-7m-m+5-20-4m = -7m-3