-150=-16t^2+7t+4

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Solution for -150=-16t^2+7t+4 equation:


Simplifying
-150 = -16t2 + 7t + 4

Reorder the terms:
-150 = 4 + 7t + -16t2

Solving
-150 = 4 + 7t + -16t2

Solving for variable 't'.

Combine like terms: -150 + -4 = -154
-154 + -7t + 16t2 = 4 + 7t + -16t2 + -4 + -7t + 16t2

Reorder the terms:
-154 + -7t + 16t2 = 4 + -4 + 7t + -7t + -16t2 + 16t2

Combine like terms: 4 + -4 = 0
-154 + -7t + 16t2 = 0 + 7t + -7t + -16t2 + 16t2
-154 + -7t + 16t2 = 7t + -7t + -16t2 + 16t2

Combine like terms: 7t + -7t = 0
-154 + -7t + 16t2 = 0 + -16t2 + 16t2
-154 + -7t + 16t2 = -16t2 + 16t2

Combine like terms: -16t2 + 16t2 = 0
-154 + -7t + 16t2 = 0

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

Divide each side by '16'.
-9.625 + -0.4375t + t2 = 0

Move the constant term to the right:

Add '9.625' to each side of the equation.
-9.625 + -0.4375t + 9.625 + t2 = 0 + 9.625

Reorder the terms:
-9.625 + 9.625 + -0.4375t + t2 = 0 + 9.625

Combine like terms: -9.625 + 9.625 = 0.000
0.000 + -0.4375t + t2 = 0 + 9.625
-0.4375t + t2 = 0 + 9.625

Combine like terms: 0 + 9.625 = 9.625
-0.4375t + t2 = 9.625

The t term is -0.4375t.  Take half its coefficient (-0.21875).
Square it (0.0478515625) and add it to both sides.

Add '0.0478515625' to each side of the equation.
-0.4375t + 0.0478515625 + t2 = 9.625 + 0.0478515625

Reorder the terms:
0.0478515625 + -0.4375t + t2 = 9.625 + 0.0478515625

Combine like terms: 9.625 + 0.0478515625 = 9.6728515625
0.0478515625 + -0.4375t + t2 = 9.6728515625

Factor a perfect square on the left side:
(t + -0.21875)(t + -0.21875) = 9.6728515625

Calculate the square root of the right side: 3.110120828

Break this problem into two subproblems by setting 
(t + -0.21875) equal to 3.110120828 and -3.110120828.

Subproblem 1

t + -0.21875 = 3.110120828 Simplifying t + -0.21875 = 3.110120828 Reorder the terms: -0.21875 + t = 3.110120828 Solving -0.21875 + t = 3.110120828 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '0.21875' to each side of the equation. -0.21875 + 0.21875 + t = 3.110120828 + 0.21875 Combine like terms: -0.21875 + 0.21875 = 0.00000 0.00000 + t = 3.110120828 + 0.21875 t = 3.110120828 + 0.21875 Combine like terms: 3.110120828 + 0.21875 = 3.328870828 t = 3.328870828 Simplifying t = 3.328870828

Subproblem 2

t + -0.21875 = -3.110120828 Simplifying t + -0.21875 = -3.110120828 Reorder the terms: -0.21875 + t = -3.110120828 Solving -0.21875 + t = -3.110120828 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '0.21875' to each side of the equation. -0.21875 + 0.21875 + t = -3.110120828 + 0.21875 Combine like terms: -0.21875 + 0.21875 = 0.00000 0.00000 + t = -3.110120828 + 0.21875 t = -3.110120828 + 0.21875 Combine like terms: -3.110120828 + 0.21875 = -2.891370828 t = -2.891370828 Simplifying t = -2.891370828

Solution

The solution to the problem is based on the solutions from the subproblems. t = {3.328870828, -2.891370828}

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