Question

Simplify by Adding/Subtracting or Multiplying the Polynomials as indicated19.20.a.(3x4 + 2x - 5x?) + (6x - 3x + 7)a - 11x2 + 8x + 7b. - 8x² +11x + 73x4 – 8x² + 8x + 7(4x² – 5x + 3) - (3x + 2x2 - 6)2x2 - 8x + 9b. -6x-3x2 – 3x + 9C.C.

Answer 1

Answer: 3x^4 - 8x^2 + 8x + 7

We are given the expression

$\begin{gathered} (3x^4+2x-5x^2)+(6x-3x^2\text{ + 7)} \\ \text{Firstly, open the parentheses} \\ 3x^4+2x-5x^2+6x-3x^2\text{ + 7} \\ \text{Secondly, collect the like terms} \\ 3x^4-5x^2-3x^2\text{ + 2x + 6x + 7} \\ 3x^4-8x^2\text{ + 8x + 7} \end{gathered}$

The answer is option