2x to the power of -2
the answer is apparently 2 over x squared
explain this

See Below

Step-by-step explanation:

When you have a negative exponent, you divide by the exponent hence the flipping. Here is an example to make it easier to explain.  Below are some power of ten:

When you go from an exponent to the one below it, you divide by the base. For example, to go from to , you divide by ten. This is the same principle used to find the values of negative exponents. is divided by 10, so should be divided by ten. is 1, making the value of as . When you divide by ten, you multiply by , this effect makes the exponent stack on the bottom and correspond to the magnitude of the power.

For this specific example, we can write:

We are raising x to the power of negative 2, so we can say it is the same as . We are also multiplying by 2, so that's how we get

If you need more of a visual, here are the powers of x:

And we just multiply 2 times the value of .

Hope this helps.

x/3-10=8

x/3=18

x=48

x = -4

step-by-step explanation:

- 20 - 4(x + 3) = 4x

=> -20 - 4x - 12 = 4x

=> - 32 -4x = 4x

=> -32 = 4x + 4x

=> - 32 = 8x

=> -32/8 = x

=> -4 = x