Question

Learning a new subject and just need some help Thanks

Answer 1

SOLUTION

Write out the polynomial

To add the polynomials, we need to add them according to power of address.

Expand, the paranthesis with sign.

$-5x^4+2x^3+8x+2x^4+4x^3+3$

Collect the terms according to the degrees, we have

$-5x^4+2x^4+2x^3+4x^3+8x+3$

Adding the terms, we have

$-3x^4+6x^3+8x+3$

Hence

-3x^4 +6x^3 + 8x + 3