Question

Solve cos x + 2√ = -cos x for x over the interval [0,2Π)

Answer 1

equation seems weird
square root of an equal sign?

Answer 2

\(\large cos(x)+\sqrt{2}=-cos(x)?\)

Answer 3

seems good with jdoe correction

Answer 4

add cosx to both sides then subtract root2 from both sides

Answer 5

getting \[2\cos x=\sqrt{2}\]

Answer 6

see what can you do now