Try another version of this question Get help: Box 1: Enter your answer as a list of values separated by commas: Example: -4, 3, 2
Solve `2cos^2(x)+3cos(x)+1 = 0` for all solutions on the interval `0 <= x < 2pi`. Your solutions must be exact, that is, in terms of `pi`.
`x` =
Give your answers as a list separated by commas.
Enter each value as a number (like 5, -3, 2.2172) or as a calculation (like 5/3, 2^3, 5+4)
Enter DNE for Does Not Exist, oo for Infinity
Decimal values are not allowed
Trig functions (sin,cos,etc.) are not allowed `(2pi)/3,(4pi)/3,pi`