Robert is building a deck in his backyard. Each piece of wood measures 42.5 inches. If he has 86 boards, how long are they altog
2 answers:
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Answer:
Option 4 is correct.
Step-by-step explanation:
Given the following options
we have to choose the difference of cubes.
Option 1:
which is not the difference of cubes
Option 2:
which is not the difference of cubes
Option 3:
which is the difference of square
Option 4:
which is the difference of cubes.
Answer is 21