A tree on a hillside casts a shadow 215 feet down the hill. If the angle of inclination of the hillside is 22 degrees to the hor
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For this case we must simplify the following expression:
We solve the operation of the second parenthesis, taking into account that different signs are subtracted and the sign of the major is placed:
We multiply:
We eliminate the parentheses:
We add similar terms, taking into account that equal signs are added and the same sign is placed:
Answer:
The simplified expression is: