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Simplifying 100 = -16t2 + 25t + 5 Reorder the terms: 100 = 5 + 25t + -16t2 Solving 100 = 5 + 25t + -16t2 Solving for variable 't'. Combine like terms: 100 + -5 = 95 95 + -25t + 16t2 = 5 + 25t + -16t2 + -5 + -25t + 16t2 Reorder the terms: 95 + -25t + 16t2 = 5 + -5 + 25t + -25t + -16t2 + 16t2 Combine like terms: 5 + -5 = 0 95 + -25t + 16t2 = 0 + 25t + -25t + -16t2 + 16t2 95 + -25t + 16t2 = 25t + -25t + -16t2 + 16t2 Combine like terms: 25t + -25t = 0 95 + -25t + 16t2 = 0 + -16t2 + 16t2 95 + -25t + 16t2 = -16t2 + 16t2 Combine like terms: -16t2 + 16t2 = 0 95 + -25t + 16t2 = 0 Begin completing the square. Divide all terms by 16 the coefficient of the squared term: Divide each side by '16'. 5.9375 + -1.5625t + t2 = 0 Move the constant term to the right: Add '-5.9375' to each side of the equation. 5.9375 + -1.5625t + -5.9375 + t2 = 0 + -5.9375 Reorder the terms: 5.9375 + -5.9375 + -1.5625t + t2 = 0 + -5.9375 Combine like terms: 5.9375 + -5.9375 = 0.0000 0.0000 + -1.5625t + t2 = 0 + -5.9375 -1.5625t + t2 = 0 + -5.9375 Combine like terms: 0 + -5.9375 = -5.9375 -1.5625t + t2 = -5.9375 The t term is -1.5625t. Take half its coefficient (-0.78125). Square it (0.6103515625) and add it to both sides. Add '0.6103515625' to each side of the equation. -1.5625t + 0.6103515625 + t2 = -5.9375 + 0.6103515625 Reorder the terms: 0.6103515625 + -1.5625t + t2 = -5.9375 + 0.6103515625 Combine like terms: -5.9375 + 0.6103515625 = -5.3271484375 0.6103515625 + -1.5625t + t2 = -5.3271484375 Factor a perfect square on the left side: (t + -0.78125)(t + -0.78125) = -5.3271484375 Can't calculate square root of the right side. The solution to this equation could not be determined.
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