15t^2+45t+10=40

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Solution for 15t^2+45t+10=40 equation:


Simplifying
15t2 + 45t + 10 = 40

Reorder the terms:
10 + 45t + 15t2 = 40

Solving
10 + 45t + 15t2 = 40

Solving for variable 't'.

Reorder the terms:
10 + -40 + 45t + 15t2 = 40 + -40

Combine like terms: 10 + -40 = -30
-30 + 45t + 15t2 = 40 + -40

Combine like terms: 40 + -40 = 0
-30 + 45t + 15t2 = 0

Factor out the Greatest Common Factor (GCF), '15'.
15(-2 + 3t + t2) = 0

Ignore the factor 15.

Subproblem 1

Set the factor '(-2 + 3t + t2)' equal to zero and attempt to solve: Simplifying -2 + 3t + t2 = 0 Solving -2 + 3t + t2 = 0 Begin completing the square. Move the constant term to the right: Add '2' to each side of the equation. -2 + 3t + 2 + t2 = 0 + 2 Reorder the terms: -2 + 2 + 3t + t2 = 0 + 2 Combine like terms: -2 + 2 = 0 0 + 3t + t2 = 0 + 2 3t + t2 = 0 + 2 Combine like terms: 0 + 2 = 2 3t + t2 = 2 The t term is 3t. Take half its coefficient (1.5). Square it (2.25) and add it to both sides. Add '2.25' to each side of the equation. 3t + 2.25 + t2 = 2 + 2.25 Reorder the terms: 2.25 + 3t + t2 = 2 + 2.25 Combine like terms: 2 + 2.25 = 4.25 2.25 + 3t + t2 = 4.25 Factor a perfect square on the left side: (t + 1.5)(t + 1.5) = 4.25 Calculate the square root of the right side: 2.061552813 Break this problem into two subproblems by setting (t + 1.5) equal to 2.061552813 and -2.061552813.

Subproblem 1

t + 1.5 = 2.061552813 Simplifying t + 1.5 = 2.061552813 Reorder the terms: 1.5 + t = 2.061552813 Solving 1.5 + t = 2.061552813 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-1.5' to each side of the equation. 1.5 + -1.5 + t = 2.061552813 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + t = 2.061552813 + -1.5 t = 2.061552813 + -1.5 Combine like terms: 2.061552813 + -1.5 = 0.561552813 t = 0.561552813 Simplifying t = 0.561552813

Subproblem 2

t + 1.5 = -2.061552813 Simplifying t + 1.5 = -2.061552813 Reorder the terms: 1.5 + t = -2.061552813 Solving 1.5 + t = -2.061552813 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-1.5' to each side of the equation. 1.5 + -1.5 + t = -2.061552813 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + t = -2.061552813 + -1.5 t = -2.061552813 + -1.5 Combine like terms: -2.061552813 + -1.5 = -3.561552813 t = -3.561552813 Simplifying t = -3.561552813

Solution

The solution to the problem is based on the solutions from the subproblems. t = {0.561552813, -3.561552813}

Solution

t = {0.561552813, -3.561552813}

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