Question Solve the equation x∈/RAlternative Form No real solution Evaluate cos(2x)×3cos(x)=4Multiply More Steps Evaluate cos(2x)×3cos(x)Multiply the terms cos(2x)cos(x)×3Use the commutative property to reorder the terms 3cos(2x)cos(x) 3cos(2x)cos(x)=4Rewrite the expression 3(2cos2(x)−1)cos(x)=4Expand the expression 6cos3(x)−3cos(x)=4Move the expression to the left side 6cos3(x)−3cos(x)−4=0Calculate cos(x)≈1.061964Solution x∈/RAlternative Form No real solution Show Solution Graph
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