What is the sum or difference?
1. 3x8 – 7x8 (1 point)
–4x16
–21x8
–4x8
10x8

2. 6y5 – 9y5 (1 point)
–3y10
15y5
–54y5
–3y5
Write the polynomial in standard form. Then name the polynomial based on its degree and number of terms.

3. 2 – 11x2 – 8x + 6x2 (1 point)
–5x2 – 8x + 2; quadratic trinomial
–5x2 – 8x; quadratic binomial
–6x2 – 8x – 2; cubic polynomial
6x2 – 8x + 2; cubic trinomial

Question

What is the sum or difference?
1.   3x8 – 7x8  (1 point)
–4x16
–21x8
–4x8
10x8

2.   6y5 – 9y5  (1 point)
–3y10
15y5
–54y5
–3y5
Write the polynomial in standard form. Then name the polynomial based on its degree and number of terms.

3.   2 – 11x2 – 8x + 6x2  (1 point)
–5x2 – 8x + 2; quadratic trinomial
–5x2 – 8x; quadratic binomial
–6x2 – 8x – 2; cubic polynomial
6x2 – 8x + 2; cubic trinomial