Question

QUESTION 1 (3 points)
Solve the following equation. Show all work.
4x² - 5 = 76​

Answer 1

`x_(1) =-(9)/(2) \\x_(2) = (9)/(2)`

Explanation:

`4x^2 = 76 + 5\\4x^2 = 81\\x^2 = (81)/(4)\\ x = |(9)/(2)|`

Answer 2

X = 9/2

Explanation:

4x² - 5 = 76

4x² = 76 + 5

4x² = 81

4x² = 9²

(2x)² = 9²

2x = 9

X = 9/2