Simplify the following expression:
2x − 6y + 3x2 + 7y − 14x.

3x2 + 12x + y
3x2 − 12x − y
3x2 − 12x + y
3x2 − 12x − 13y

Step-by-step explanation:

Given expression,

Since, further simplification is not possible,

Hence, THIRD option is correct.

by definition, an arc subtended by a central angle of some given measure has the same measure. so .

false

step-by-step explanation:

false.   two legs of the trapezoid would be congruent, but the other two would not.   were all the legs congruent, then we'd have a square; were the 2 shorter sides congruent and the 2 longer sides also congruent, we'd have a rectangle.