Final answer to the problem
$x=0+2\pi n,\:x=2\pi+2\pi n\:,\:\:n\in\Z$
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Step-by-step Solution
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1
We can try to factor the expression $4\cos\left(x\right)^2-2\cos\left(x\right)-2$ by applying the following substitution
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$u=\cos\left(x\right)$
Learn how to solve problems step by step online. Solve the trigonometric equation 4cos(x)^2-2cos(x)+-2=0. We can try to factor the expression 4\cos\left(x\right)^2-2\cos\left(x\right)-2 by applying the following substitution. Substituting in the polynomial, the expression results in. Factor the trinomial 4u^2-2u-2 of the form ax^2+bx+c, first, make the product of 4 and -2. Now, find two numbers that multiplied give us -8 and add up to -2.
Final answer to the problem
$x=0+2\pi n,\:x=2\pi+2\pi n\:,\:\:n\in\Z$
