Barbara used the distributive property to write an expression that is equivalent to 7 d + 63. Her work is shown below. The greatest common factor is 7 so 7 d + 63 = 7 (d + 63) What was Barbara's error?

Barbara's did not factor out 63.

Step-by-step explanation:

63 can be factorize as 63 = 7 9 and 7 d can be factorize as 7 d = 7 d

Therefore common term between 7 d and 63 is 7.

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In Barbara's equation, it did not factorize 63 as it contains common term 7 in it. Therefore that is the error in Barbara's equation.

The answer is B

Step-by-step explanation:

i took the test.

1) 2/5

2) zero=0/1

3) zero=0/2

4) -4/5

5) undefined=3/0