Question

8x^2-7=793 solve by taking square roots

Answer 1

`{8x}^(2) - 7 = 793 \\ {8x}^(2) = 793 + 7 \\ {8x}^(2) = 800 \\ {x}^(2) = 100 \\ x = 10`

Answer 2

x = ± 10

Explanation:

8x² - 7 = 793 ( add 7 to both sides )

8x² = 800 ( divide both sides by 8 )

x² = 100 ( take square root of both sides )

x = ±
`√(100)` = ± 10