It may look lame but I can't work out how to solve (-9) sqrt(4-x^2) = 4x + 5sqrt2. I need some guidance, please.
First divide both sides by -9
sqrt(4-x^2) = 0.444x - 0.1571
Then square both sides and solve the resulting quadratic equation
sqrt(4-x^2) = 0.444x - 0.1571
Then square both sides and solve the resulting quadratic equation