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Simplifying Tan2x + -4tanx + -21 = 0 Reorder the terms: -21 + -4antx + an2xT = 0 Solving -21 + -4antx + an2xT = 0 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '21' to each side of the equation. -21 + -4antx + 21 + an2xT = 0 + 21 Reorder the terms: -21 + 21 + -4antx + an2xT = 0 + 21 Combine like terms: -21 + 21 = 0 0 + -4antx + an2xT = 0 + 21 -4antx + an2xT = 0 + 21 Combine like terms: 0 + 21 = 21 -4antx + an2xT = 21 Reorder the terms: -21 + -4antx + an2xT = 21 + -21 Combine like terms: 21 + -21 = 0 -21 + -4antx + an2xT = 0 The solution to this equation could not be determined.
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