151=253t-16t^2

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Solution for 151=253t-16t^2 equation:


Simplifying
151 = 253t + -16t2

Solving
151 = 253t + -16t2

Solving for variable 't'.

Reorder the terms:
151 + -253t + 16t2 = 253t + -253t + -16t2 + 16t2

Combine like terms: 253t + -253t = 0
151 + -253t + 16t2 = 0 + -16t2 + 16t2
151 + -253t + 16t2 = -16t2 + 16t2

Combine like terms: -16t2 + 16t2 = 0
151 + -253t + 16t2 = 0

Begin completing the square.  Divide all terms by
16 the coefficient of the squared term: 

Divide each side by '16'.
9.4375 + -15.8125t + t2 = 0

Move the constant term to the right:

Add '-9.4375' to each side of the equation.
9.4375 + -15.8125t + -9.4375 + t2 = 0 + -9.4375

Reorder the terms:
9.4375 + -9.4375 + -15.8125t + t2 = 0 + -9.4375

Combine like terms: 9.4375 + -9.4375 = 0.0000
0.0000 + -15.8125t + t2 = 0 + -9.4375
-15.8125t + t2 = 0 + -9.4375

Combine like terms: 0 + -9.4375 = -9.4375
-15.8125t + t2 = -9.4375

The t term is -15.8125t.  Take half its coefficient (-7.90625).
Square it (62.50878906) and add it to both sides.

Add '62.50878906' to each side of the equation.
-15.8125t + 62.50878906 + t2 = -9.4375 + 62.50878906

Reorder the terms:
62.50878906 + -15.8125t + t2 = -9.4375 + 62.50878906

Combine like terms: -9.4375 + 62.50878906 = 53.07128906
62.50878906 + -15.8125t + t2 = 53.07128906

Factor a perfect square on the left side:
(t + -7.90625)(t + -7.90625) = 53.07128906

Calculate the square root of the right side: 7.285004397

Break this problem into two subproblems by setting 
(t + -7.90625) equal to 7.285004397 and -7.285004397.

Subproblem 1

t + -7.90625 = 7.285004397 Simplifying t + -7.90625 = 7.285004397 Reorder the terms: -7.90625 + t = 7.285004397 Solving -7.90625 + t = 7.285004397 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '7.90625' to each side of the equation. -7.90625 + 7.90625 + t = 7.285004397 + 7.90625 Combine like terms: -7.90625 + 7.90625 = 0.00000 0.00000 + t = 7.285004397 + 7.90625 t = 7.285004397 + 7.90625 Combine like terms: 7.285004397 + 7.90625 = 15.191254397 t = 15.191254397 Simplifying t = 15.191254397

Subproblem 2

t + -7.90625 = -7.285004397 Simplifying t + -7.90625 = -7.285004397 Reorder the terms: -7.90625 + t = -7.285004397 Solving -7.90625 + t = -7.285004397 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '7.90625' to each side of the equation. -7.90625 + 7.90625 + t = -7.285004397 + 7.90625 Combine like terms: -7.90625 + 7.90625 = 0.00000 0.00000 + t = -7.285004397 + 7.90625 t = -7.285004397 + 7.90625 Combine like terms: -7.285004397 + 7.90625 = 0.621245603 t = 0.621245603 Simplifying t = 0.621245603

Solution

The solution to the problem is based on the solutions from the subproblems. t = {15.191254397, 0.621245603}

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