Home > A2C > Chapter 1 > Lesson 1.1.3 > Problem 1-37
1-37.
Nissos and Chelita were arguing over a math problem. Nissos was trying to explain to Chelita that she had made a mistake in finding the
Step 1: | ||
Step 2: | Therefore, | |
Step 3: | So |
Nissos tried to explain to Chelita that she had done something wrong. What is Chelita’s error? Justify and explain your answer completely.
Notice that
She made a sign error while factoring. The correct factorization is