PLEASE HELP‼️ Unit 7: Polygons & Quadrilaterals

Homework 3: Parallelogram Proofs

What is x3+3x2−16x−48 divided by x−1?

If m∠abc = 70°, what is m∠abd? justify your reasoning.  using the addition property of equality, 40 + 70 = 110, so m∠abd = 110°.  using the subtraction property of equality, 70 − 30 = 40, so m∠abd = 30°.  using the angle addition postulate, 40 + m∠abd = 70. so, m∠abd = 30° using the subtraction property of equality.  using the angle addition postulate, 40 + 70 = m∠abd. so, m∠abd = 110° using the addition property of equality.

How can (square root of 25) ^2 be rewritten?