Question

Answer 1

3:

a: \(=-3x^2+15x+5x-5+3x^2=20x-5\)

b: \(=2x^3-3x-5x^3-x^2+x^2=-3x^3-3x\)

c: \(=x^2-5x-27\)

d: \(=\dfrac{5}{2}x-2+x^3+2-x^3+x=\dfrac{7}{2}x\)

e: \(=x^2-16-x^2=-16\)

f: \(=2x^2-x+6x-3-5x=2x^2-3\)

g: \(=\dfrac{x^4\left(0.5x^2+1\right)-2x\left(0.5x^2+1\right)+3\left(0.5x^2+1\right)}{0.5x^2+1}\)

=x^4-2x+3