Could you give the question more clear?
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The domain of given function is <u>All real numbers</u>
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For each value of x the function is defined.
Example -
The value is 
The value is 4
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Answer:
Area = l x w
Area = (x + 1)(x + 7)
Area = x² + 7x + x + 7
Area = x² + 8x + 7
Step-by-step explanation:
It’s 50/50 hope this helps
<span>-28x²-12x = -4x(7x+3) the first one is answer</span>