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Solve the following problems using special product. SHOW YOUR SOLUTION.

1.) Find the area of a square whose side measures (7+4k) inches. ​

Sagot :

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Answer:

49 + 56k + 16 k^2

Step-by-step explanation:

The area of a square is found by

A = s^2  where s is the side length

A = ( 7 + 4k) ^2

We can use  ( a+ b) ^2 = a^2 + 2ab + b^2  where a = 7 and b = 4k

A = 7^2 + 2 * 7 * 4k + ( 4k) ^2

  = 49 + 56k + 16 k^2

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