Wielomiany . W(x) = x³+2x-5 , P(x) = - x²+5x+9 , Q(x) = 3x -1 . a) 3W(x) +P(x)= b) P(x) - Q(x)= c) Q(x) × P(x)= d) Q²(x) + P(x)= V(x)=30x⁴+6x³-45x²-9x Równanie . a+b=98 1= - (a-2b)

a) 3(x³+2x-5)+(-x²+5x+9)=3x³+6x-15-x²+5x+9=3x³-x²+11x-6 b) -x²+5x+9-(3x-1)=-x²+5x+9-3x+1=-x²+2x+10 c) (3x-1)×(-x²+5x+9)=-3x³+15x²+27x+x²-5x-9=-3x³+16x²+22x-9 d) (3x-1)²+(-x²+5x+9)=(3x)²-2×3x×1+1²-x²+5x+9=9x²-6x+1-x²+5x+9=8x²-x+10