Question

Can anyone please help me?

Answer 1

The answer is 1.4 or -1.4.

Answer 2

x = 1.4 or -1.4

Explanation:

→ Substitute y = 4 into y = x² + 2

4 = x² + 2

→ Minus 2 from both sides

2 = x²

→ Square root both sides

√2 = x

→ Simplify

x = 1.4 or -1.4