How much less than 3x^2−7x+9 is 2x^2+4x−8? what is the value of the result when x=2? ^=power

THE ANSWER IS -1

first, subtract the polynomials:

3x^2-7x+9-(2x^2+4x-8)

Remove parentheses

3x^2-7x-2x^2-4x+8

Combine like terms

The new polynomial is x^2-11x+17 (if you do RSM this is actually the answer to one of the fields on the HW)

Substitute for when x=2

2^2-11*2+17

Compute

4-22+17

4-5

-1

I know for a fact that the answer is -1, I entered this in myself and it was correct.

constant acceleration- a

constant velocity- c

no velocity or acceleration- b

explanation:

for body moving with a constant acceleration, the rate of change of displacement changes over time. this is proven by the increasing gradient of the curve (a) against time.

a body that is moving at constant velocity covers equal distances over equal periods of time, thus the straight line with a constant gradient c.

a stationary body   covers no displacement as time elapses. thus the flat line with   zero gradient.