1.) Which of the following is equal to (x+2)(x-4) ?> a. 7+2x2 +16x+32
b. r +2x2 -16x-32
-6° +32
d. x4 - 4x'-12x+32x+64
None of the above
C.

None of the above.

Step-by-step explanation:

(x + 2)(x - 4)

= x(x - 4) + 2(x - 4)

= x^2 - 4x + 2x - 8

= x^2 - 2x - 8.

answer: two angles are called supplementary if they add up to 180°. example: the two angles (140° and 40°) are supplementary because they add up to 180°.

step-by-step explanation:

this is a good question! i'll do some research and come back when i have the answer!