Dane są wielomiany: [latex]Dane są wielomiany: \ W(x)= -x^3+2x^2-x+5 \ P(x)=2x^2-x+1 \ Q(x)= 5x+2 \ Oblicz : \ a) 2W(x)+3P(x)-Q(x) \ b) W(x)-[P(x)+3Q(x)][/latex] \ Z góry dziękuję za pomoc :)    

a) 2W(x)+3P(x)-Q(x) = 2(-x³+2x²-x+5)+3(2x²-x+1) -(5x+2)=                                = -2x³+4x²-2x+10+6x²-3x+3-5x-2=                                = -2x³+10x²-10x+11 b) W(x)-[P(x)+3Q(x)]= -x³+2x²-x+5-[2x²-x+1+3(5x+2)]=                                = -x³+2x²-x+5-[2x²-x+1+15x+6]=                                = -x³+2x²-x+5-2x²+x-1-15x-6=                                = -x³-15x-2