Write as a single power: 4^20 + 4^20 + 4^20 + 4^20
1 answer:
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Given:
The equation is
The incorrect solution steps are given.
To find:
The first error.
Solution:
We have,
Using distributive property, we get
The given step 1 is , which is not correct.
Therefore, there is first error in step 1 because the distribution property is not used properly.
Hence, the correct option is D.