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Simplifying 4x * 4x + 21 = 18 Reorder the terms for easier multiplication: 4 * 4x * x + 21 = 18 Multiply 4 * 4 16x * x + 21 = 18 Multiply x * x 16x2 + 21 = 18 Reorder the terms: 21 + 16x2 = 18 Solving 21 + 16x2 = 18 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-21' to each side of the equation. 21 + -21 + 16x2 = 18 + -21 Combine like terms: 21 + -21 = 0 0 + 16x2 = 18 + -21 16x2 = 18 + -21 Combine like terms: 18 + -21 = -3 16x2 = -3 Divide each side by '16'. x2 = -0.1875 Simplifying x2 = -0.1875 Reorder the terms: 0.1875 + x2 = -0.1875 + 0.1875 Combine like terms: -0.1875 + 0.1875 = 0.0000 0.1875 + x2 = 0.0000 The solution to this equation could not be determined.
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