How do you evaluate -7^2?

We have to find the value of -72

The squares of negative numbers give a positive value, because if we multiply two negative numbers then it will result in a positive number.

Remember that: (-) x (-) = (+)

Therefore, square of (-n), (-n)2 = (-n) x (-n) = n2

Where n is a number.

Solution

The value of -72

(-7)2 = (-7) x (-7) = 49

Answer

The value of -72 = 49

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