Question

Help me out plz >.<
For questions 1-3, simplify the polynomial.

1. 16x^2+2+2x-15x^2-1+14x
a. 31x^2+16x+1
b. x^2-12x+1
c. x^2+16x+1
d. x^2+16x+2

2. 2x^2+8-4x+3x-6x^2+7
a. -8x^2-7x+15
b. -4x^2-x+15
c. 4x^2+x+15
d. 8x^2+7x+15

3. 4x^2+8x-11x+6-5x^2+2
a. -x^2-3x+8
b. -x^2+3x+8
c. x^2-3x+8
d. x^2+3x+8

Answer 1

Add and subtract similar terms, using the numbers out front. So, x^2 goes together. X's go together. And the numbers by themselves go together.

Answer 2

SO, #1: We got a 16x^2 and a -15x^2. If you add them (which is subtraction), you'll get x^2 in the final answer.
There's a 2x and 14x. Add them, you get 16x.
Finally, a 2 and a -1. Add them, you get 1.
So, the final answer is x^2 + 16x + 1