Question

Whay maked this statement true ?7-^2=?

Answer 1

I'm gonna say guess the equation is -7^2.

The answer would be 49.

49 would make that equation true.

Answer 2

Remember the following:
-ve * -ve = +ve
-ve * +ve = -ve
x² = x * x
x⁻² = $\frac{1}{x^2}$

Now, for the given:
1- If the given equation is -(7)², then:
-(7)² = - (7*7) = -49
Therefore,, -49 would make this statement true.

2- If the given equation is (-7)², then:
(-7)² = (-7) * (-7) = 49
Therefore, 49 would make this statement true

3- If the given equation is 7⁻², then:
7⁻² = $\frac{1}{7^2} = \frac{1}{7} * \frac{1}{7} = \frac{1}{49}$

Therefore, $\frac{1}{49}$ would make the statement true.

Hope this helps :)