Question

Solve this:
x2-2x-24=0

Answer 1

When "squaring" a number, it means multiplying a number to itself.

When we square a number x, we multiply x by itselft which is x.

`x\cdot x=x^2`

Ex.

Square the number 4.

x = 4

`x^2=x\cdot x`
`x^2=4\cdot4`
`x^2=16`

In finding square roots, we just need to find what number must be multiplied to itself in order to get a given value.

Ex. Find the square root of 49.

`x^2=49`
`\sqrt[]{x^2}=x`

`\sqrt[]{49}=x`
`x=7`
`n^2=0`
`\sqrt[]{n^2}=\sqrt[]{0}`
`n=0`

Although, multiplying any number by 0 will give you an answer of 0, since the idea of squaring and square root revolves around the idea of multiplying a number to itself, it must be the same number.