4.9t^2+5t=650

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Solution for 4.9t^2+5t=650 equation:


Simplifying
4.9t2 + 5t = 650

Reorder the terms:
5t + 4.9t2 = 650

Solving
5t + 4.9t2 = 650

Solving for variable 't'.

Reorder the terms:
-650 + 5t + 4.9t2 = 650 + -650

Combine like terms: 650 + -650 = 0
-650 + 5t + 4.9t2 = 0

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

Divide each side by '4.9'.
-132.6530612 + 1.020408163t + t2 = 0

Move the constant term to the right:

Add '132.6530612' to each side of the equation.
-132.6530612 + 1.020408163t + 132.6530612 + t2 = 0 + 132.6530612

Reorder the terms:
-132.6530612 + 132.6530612 + 1.020408163t + t2 = 0 + 132.6530612

Combine like terms: -132.6530612 + 132.6530612 = 0.0000000
0.0000000 + 1.020408163t + t2 = 0 + 132.6530612
1.020408163t + t2 = 0 + 132.6530612

Combine like terms: 0 + 132.6530612 = 132.6530612
1.020408163t + t2 = 132.6530612

The t term is 1.020408163t.  Take half its coefficient (0.5102040815).
Square it (0.2603082048) and add it to both sides.

Add '0.2603082048' to each side of the equation.
1.020408163t + 0.2603082048 + t2 = 132.6530612 + 0.2603082048

Reorder the terms:
0.2603082048 + 1.020408163t + t2 = 132.6530612 + 0.2603082048

Combine like terms: 132.6530612 + 0.2603082048 = 132.9133694048
0.2603082048 + 1.020408163t + t2 = 132.9133694048

Factor a perfect square on the left side:
(t + 0.5102040815)(t + 0.5102040815) = 132.9133694048

Calculate the square root of the right side: 11.52880607

Break this problem into two subproblems by setting 
(t + 0.5102040815) equal to 11.52880607 and -11.52880607.

Subproblem 1

t + 0.5102040815 = 11.52880607 Simplifying t + 0.5102040815 = 11.52880607 Reorder the terms: 0.5102040815 + t = 11.52880607 Solving 0.5102040815 + t = 11.52880607 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-0.5102040815' to each side of the equation. 0.5102040815 + -0.5102040815 + t = 11.52880607 + -0.5102040815 Combine like terms: 0.5102040815 + -0.5102040815 = 0.0000000000 0.0000000000 + t = 11.52880607 + -0.5102040815 t = 11.52880607 + -0.5102040815 Combine like terms: 11.52880607 + -0.5102040815 = 11.0186019885 t = 11.0186019885 Simplifying t = 11.0186019885

Subproblem 2

t + 0.5102040815 = -11.52880607 Simplifying t + 0.5102040815 = -11.52880607 Reorder the terms: 0.5102040815 + t = -11.52880607 Solving 0.5102040815 + t = -11.52880607 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-0.5102040815' to each side of the equation. 0.5102040815 + -0.5102040815 + t = -11.52880607 + -0.5102040815 Combine like terms: 0.5102040815 + -0.5102040815 = 0.0000000000 0.0000000000 + t = -11.52880607 + -0.5102040815 t = -11.52880607 + -0.5102040815 Combine like terms: -11.52880607 + -0.5102040815 = -12.0390101515 t = -12.0390101515 Simplifying t = -12.0390101515

Solution

The solution to the problem is based on the solutions from the subproblems. t = {11.0186019885, -12.0390101515}

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