Question

a)A=3x(2/3x²-3x⁴)+(3x²)(x³-1)+(-2+9).x²-12

b)B=x(2x³+x+2)-2x²(x²+1)+x²-2x+1

c)C=x.(2x+1)-x²(x+2)+x³-x+3

Answer 1

a, \(A=2x^3-9x^5+3x^5-3x^2+7x^2-12=-6x^5+2x^3+4x^2-12\)

b, \(B=2x^4+x^2+2x-2x^3-2x^2+x^2-2x+1=2x^4-2x^3+1\)

c, \(C=2x^2+x-x^3-2x^2+x^3-x+3=3\)