Evaluate (-3)^2 and -3^2.
A9 and 9
B-9 and -9
C9 and -9
D-9 and 9
Answer & Solution
Correct answer: C. 9 and -9
In (-3)^2 the minus sign is squared along with 3, so (-3)(-3) = 9. In -3^2 the exponent binds first, giving 3^2 = 9 and the leading minus makes it -9. The two expressions are not equal: parenthesising the negative matters.
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