A car company tested a sports car on a road with different inclines. The test driver tested the car by driving a distance of x miles on a flat road, (x2 + 3) miles downhill, and (x − 7) miles uphill. Which simplified expression is equivalent to the total distance, in miles, for which the car was tested?
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Total distance = flat road + downhill + uphill
Total distance = x + (x² + 3) + (x - 7)
= x + x² + 3 + x - 7
= x² + 2x - 4
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Answer :-
Distance = x + ( x² + 3 ) + ( x - 7 )
= x + x² + 3 + x - 7
= x² + 2x - 4 ( Ans )
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