Find the Error A student evaluated the expression (-y) if x=-4 and y=7. Which of the following identifies his error and corrects it?
(2²-y)³-(-4²-7)³
-(-16-7)³
-(-23)³
=-12, 167
OA) He substituted -4 for x, but he should have take-4 to the second power, not just 4. Placing parentheses around-4 would have
helped him to take the correct value to the second power. The correct value of the expression is -327.
OB) He should have raised 7 to the third power before subtracting 7 from-16. The correct value of the expression is -359.
OC) He substituted -4 for x, but he should have take-4 to the second power, not just 4. Placing parentheses around -4 would have
helped him to take the correct value to the second power. The correct value of the expression is 729.
D) He should have raised 7 to the third power before subtracting 7 from-16. The correct value of the expression is -327.