Question

Can someone help me with this question?

Answer 1

Answer: - 27

Explanation:

Plug in for x = 3 and y = -6

I'll start with x to make it easier.

Plugging in x =3

`√(x^4)`

Means that first we find x^4, and take the square root of that result.

1. Find x^4

x = 3

3^4 = 3 * 3 * 3 *3 = 81

2. Take the square root of x^4

Square root of 81 = 9

So
`√(x^4)` = 9

Plugging in y = -6

Let's move onto plugging in y, which appears in the expression as y²

y = -6

so y² = -6 * -6 = 36

Putting this together into the expression

`√(x^4)` - y²

9 - 36 = -27