In the polynomial below, what number should replace the question mark to produce a difference of squares?
x² + ?X-49
A. O
B. 14
C. 49
OD.7

step-by-step explanation:

ok so im not 100% sure but you would start by adding 5.1t and 1.9t beacuse they have the same variable. that is 7t.   then add -3.6 + 1.2 which is -2.4

so then keep that as -2.4 + 7t. i apologize if this is incorrect. best luck on your test < 3

d. it is a convex pentagon because it has five sides and none of the sides would extend into the inside of the polygon.

step-by-step explanation:

just keep asking questions until you have a better understanding.

step-by-step explanation: