26.39t+t^2=90

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Solution for 26.39t+t^2=90 equation:


Simplifying
26.39t + t2 = 90

Solving
26.39t + t2 = 90

Solving for variable 't'.

Reorder the terms:
-90 + 26.39t + t2 = 90 + -90

Combine like terms: 90 + -90 = 0
-90 + 26.39t + t2 = 0

Begin completing the square.

Move the constant term to the right:

Add '90' to each side of the equation.
-90 + 26.39t + 90 + t2 = 0 + 90

Reorder the terms:
-90 + 90 + 26.39t + t2 = 0 + 90

Combine like terms: -90 + 90 = 0
0 + 26.39t + t2 = 0 + 90
26.39t + t2 = 0 + 90

Combine like terms: 0 + 90 = 90
26.39t + t2 = 90

The t term is 26.39t.  Take half its coefficient (13.195).
Square it (174.108025) and add it to both sides.

Add '174.108025' to each side of the equation.
26.39t + 174.108025 + t2 = 90 + 174.108025

Reorder the terms:
174.108025 + 26.39t + t2 = 90 + 174.108025

Combine like terms: 90 + 174.108025 = 264.108025
174.108025 + 26.39t + t2 = 264.108025

Factor a perfect square on the left side:
(t + 13.195)(t + 13.195) = 264.108025

Calculate the square root of the right side: 16.251400709

Break this problem into two subproblems by setting 
(t + 13.195) equal to 16.251400709 and -16.251400709.

Subproblem 1

t + 13.195 = 16.251400709 Simplifying t + 13.195 = 16.251400709 Reorder the terms: 13.195 + t = 16.251400709 Solving 13.195 + t = 16.251400709 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-13.195' to each side of the equation. 13.195 + -13.195 + t = 16.251400709 + -13.195 Combine like terms: 13.195 + -13.195 = 0.000 0.000 + t = 16.251400709 + -13.195 t = 16.251400709 + -13.195 Combine like terms: 16.251400709 + -13.195 = 3.056400709 t = 3.056400709 Simplifying t = 3.056400709

Subproblem 2

t + 13.195 = -16.251400709 Simplifying t + 13.195 = -16.251400709 Reorder the terms: 13.195 + t = -16.251400709 Solving 13.195 + t = -16.251400709 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-13.195' to each side of the equation. 13.195 + -13.195 + t = -16.251400709 + -13.195 Combine like terms: 13.195 + -13.195 = 0.000 0.000 + t = -16.251400709 + -13.195 t = -16.251400709 + -13.195 Combine like terms: -16.251400709 + -13.195 = -29.446400709 t = -29.446400709 Simplifying t = -29.446400709

Solution

The solution to the problem is based on the solutions from the subproblems. t = {3.056400709, -29.446400709}

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