Question

F(x)=x^2+7

find x if f(x) = 24

Write in ascending order

x= _______ and ______

Answer 1

`\huge\boxed{\sf x = \pm √(17) }`

Explanation:

Given function:

f(x) = x² + 7

Given that, f(x) = 24

24 = x² + 7

• Subtract 7 from both sides

24 - 7 = x²

17 = x²

• Take square root on both sides

x = ±√17

So,

x = √17 or x = -√17

`\rule[225]{225}{2}`