Explain why the square root of a number is defined to be equal to that number to the 1/2 power.

The square root of a number is a number, when multiplied by itself, equals a desired value.

See below for proof

The square root of a number n, is represented as:

This can be rewritten as:

According to law of indices

Using the above rule, we have:

Hence, the square root of a number is the same as the number to the power of 1/2

Read more about square roots at:

link

abde or 1,2,4, 5 is the answer

step-by-step explanation:

225x²+4=0

225x²=0-4

225x²=-4

x²=-4/225

x=±√-4/225