How is this answer correct?
1. 2 – 11x^2 – 8x + 6x^2
A. [x] -5x^2 – 8x + 2; quadratic trinomial
B. -5x^2 – 8x; quadratic binomial
C. -6x^2 – 8x – 2; cubic polynomial
D. -6x^2 – 8x + 2; cubic trinomial

Question

How is this answer correct?
1.	2 – 11x^2 – 8x + 6x^2
A.	[x] -5x^2 – 8x + 2; quadratic trinomial
B.	-5x^2 – 8x; quadratic binomial
C.	-6x^2 – 8x – 2; cubic polynomial
D.	-6x^2 – 8x + 2; cubic trinomial

anonymous · Answer

$$2-11x^2-8x+6x^2$$can be simplified by combining the x^2 terms:$$2-5x^2-8x$$By rearranging the terms:$$-5x^2-8x+2$$

It's quadratic because the highest power is 2 (highest exponent) and it is a trinomial because there are 3 terms.

welshfella · Answer

simplifying 1 gives A
-11x^2 + 6x^2 = -5x^2  and the +2 is retained