Question

How do you solve `5x^2 + 12r = -4x^2 -4`?

Answer 1

`5x^2+12r = -4x^2-4`

`rArr 9x^2 = -12r-4`

`rArr (3x)^2 = -12r -4`

`rArr 3x = +-sqrt(-12r-4)`

`rArr x = +- sqrt(-12r-4)/3`