Perform the indicated operations without a calculator: 15^2 =
A)150
B)30
C)225
D)23

Name: Perform the indicated operations without a calculator: 15^2 = A)150 B)30 C)225 D)23
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Question

Perform the indicated operations without a calculator: 15^2 = 
A)150 
B)30 
C)225 
D)23

Quizplus · Accepted Answer

To find the square of 15 without a calculator, you can use the formula (a+b)^2 = a^2 + 2ab + b^2. Here, a and b are both 15. So, expanding the formula, we get 15^2 = 15*15 + 2*15*15 + 15*15 = 225 + 450 + 225 = 900. Therefore, the best choice is C, which is equal to 225.

Perform the Indicated Operations Without a Calculator: 15^2 =