Question

Solver for x -4x^2 -7=-11

Answer 1

x = ± 1

Explanation:

given the equation

- 4x² - 7 = - 11 ( add 7 to both sides )

- 4x² = - 4 ( divide both sides by - 4 )

x² = 1 ( take square root of both sides )

`√(x^2)` = ±
`√(1)` , that is

x = ± 1

solutions are x = - 1 and x = 1