Question

1.ADD (5x4 + 3x3 -x2 +16x)+(2x3 -3x2 -10x4 +x -1)

Ihave tried every possible correct answer and none of them seem to be right on any of these 3 questions please help

2.Subtract the following polynomials correctly.... (5x4 + 3x3 -x2 +16x) - (2x3 -3x2 -10x4 +x -1)


3.Multiply (5x4 + 3x3 -x2 +16x)(x5+2x-1)

Answer 1

1. combining like terms you should get: -5x^4+5x^3-4x^2+17x-1

2. again combine all like terms to get: 15x^4+x^3+2x^2+15x+1

3. 5x^9+3x^8-x^7+16x^6+10x^5+x^4-5x^3+33x^2-16x