-15t^2+40t+5=0

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Solution for -15t^2+40t+5=0 equation:


Simplifying
-15t2 + 40t + 5 = 0

Reorder the terms:
5 + 40t + -15t2 = 0

Solving
5 + 40t + -15t2 = 0

Solving for variable 't'.

Factor out the Greatest Common Factor (GCF), '5'.
5(1 + 8t + -3t2) = 0

Ignore the factor 5.

Subproblem 1

Set the factor '(1 + 8t + -3t2)' equal to zero and attempt to solve: Simplifying 1 + 8t + -3t2 = 0 Solving 1 + 8t + -3t2 = 0 Begin completing the square. Divide all terms by -3 the coefficient of the squared term: Divide each side by '-3'. -0.3333333333 + -2.666666667t + t2 = 0 Move the constant term to the right: Add '0.3333333333' to each side of the equation. -0.3333333333 + -2.666666667t + 0.3333333333 + t2 = 0 + 0.3333333333 Reorder the terms: -0.3333333333 + 0.3333333333 + -2.666666667t + t2 = 0 + 0.3333333333 Combine like terms: -0.3333333333 + 0.3333333333 = 0.0000000000 0.0000000000 + -2.666666667t + t2 = 0 + 0.3333333333 -2.666666667t + t2 = 0 + 0.3333333333 Combine like terms: 0 + 0.3333333333 = 0.3333333333 -2.666666667t + t2 = 0.3333333333 The t term is -2.666666667t. Take half its coefficient (-1.333333334). Square it (1.777777780) and add it to both sides. Add '1.777777780' to each side of the equation. -2.666666667t + 1.777777780 + t2 = 0.3333333333 + 1.777777780 Reorder the terms: 1.777777780 + -2.666666667t + t2 = 0.3333333333 + 1.777777780 Combine like terms: 0.3333333333 + 1.777777780 = 2.1111111133 1.777777780 + -2.666666667t + t2 = 2.1111111133 Factor a perfect square on the left side: (t + -1.333333334)(t + -1.333333334) = 2.1111111133 Calculate the square root of the right side: 1.452966315 Break this problem into two subproblems by setting (t + -1.333333334) equal to 1.452966315 and -1.452966315.

Subproblem 1

t + -1.333333334 = 1.452966315 Simplifying t + -1.333333334 = 1.452966315 Reorder the terms: -1.333333334 + t = 1.452966315 Solving -1.333333334 + t = 1.452966315 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '1.333333334' to each side of the equation. -1.333333334 + 1.333333334 + t = 1.452966315 + 1.333333334 Combine like terms: -1.333333334 + 1.333333334 = 0.000000000 0.000000000 + t = 1.452966315 + 1.333333334 t = 1.452966315 + 1.333333334 Combine like terms: 1.452966315 + 1.333333334 = 2.786299649 t = 2.786299649 Simplifying t = 2.786299649

Subproblem 2

t + -1.333333334 = -1.452966315 Simplifying t + -1.333333334 = -1.452966315 Reorder the terms: -1.333333334 + t = -1.452966315 Solving -1.333333334 + t = -1.452966315 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '1.333333334' to each side of the equation. -1.333333334 + 1.333333334 + t = -1.452966315 + 1.333333334 Combine like terms: -1.333333334 + 1.333333334 = 0.000000000 0.000000000 + t = -1.452966315 + 1.333333334 t = -1.452966315 + 1.333333334 Combine like terms: -1.452966315 + 1.333333334 = -0.119632981 t = -0.119632981 Simplifying t = -0.119632981

Solution

The solution to the problem is based on the solutions from the subproblems. t = {2.786299649, -0.119632981}

Solution

t = {2.786299649, -0.119632981}

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