-4.9t^2+10t+2=4.5

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Solution for -4.9t^2+10t+2=4.5 equation:


Simplifying
-4.9t2 + 10t + 2 = 4.5

Reorder the terms:
2 + 10t + -4.9t2 = 4.5

Solving
2 + 10t + -4.9t2 = 4.5

Solving for variable 't'.

Reorder the terms:
2 + -4.5 + 10t + -4.9t2 = 4.5 + -4.5

Combine like terms: 2 + -4.5 = -2.5
-2.5 + 10t + -4.9t2 = 4.5 + -4.5

Combine like terms: 4.5 + -4.5 = 0.0
-2.5 + 10t + -4.9t2 = 0.0

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

Divide each side by '-4.9'.
0.5102040816 + -2.040816327t + t2 = 0

Move the constant term to the right:

Add '-0.5102040816' to each side of the equation.
0.5102040816 + -2.040816327t + -0.5102040816 + t2 = 0 + -0.5102040816

Reorder the terms:
0.5102040816 + -0.5102040816 + -2.040816327t + t2 = 0 + -0.5102040816

Combine like terms: 0.5102040816 + -0.5102040816 = 0.0000000000
0.0000000000 + -2.040816327t + t2 = 0 + -0.5102040816
-2.040816327t + t2 = 0 + -0.5102040816

Combine like terms: 0 + -0.5102040816 = -0.5102040816
-2.040816327t + t2 = -0.5102040816

The t term is -2.040816327t.  Take half its coefficient (-1.020408164).
Square it (1.041232821) and add it to both sides.

Add '1.041232821' to each side of the equation.
-2.040816327t + 1.041232821 + t2 = -0.5102040816 + 1.041232821

Reorder the terms:
1.041232821 + -2.040816327t + t2 = -0.5102040816 + 1.041232821

Combine like terms: -0.5102040816 + 1.041232821 = 0.5310287394
1.041232821 + -2.040816327t + t2 = 0.5310287394

Factor a perfect square on the left side:
(t + -1.020408164)(t + -1.020408164) = 0.5310287394

Calculate the square root of the right side: 0.728717188

Break this problem into two subproblems by setting 
(t + -1.020408164) equal to 0.728717188 and -0.728717188.

Subproblem 1

t + -1.020408164 = 0.728717188 Simplifying t + -1.020408164 = 0.728717188 Reorder the terms: -1.020408164 + t = 0.728717188 Solving -1.020408164 + t = 0.728717188 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '1.020408164' to each side of the equation. -1.020408164 + 1.020408164 + t = 0.728717188 + 1.020408164 Combine like terms: -1.020408164 + 1.020408164 = 0.000000000 0.000000000 + t = 0.728717188 + 1.020408164 t = 0.728717188 + 1.020408164 Combine like terms: 0.728717188 + 1.020408164 = 1.749125352 t = 1.749125352 Simplifying t = 1.749125352

Subproblem 2

t + -1.020408164 = -0.728717188 Simplifying t + -1.020408164 = -0.728717188 Reorder the terms: -1.020408164 + t = -0.728717188 Solving -1.020408164 + t = -0.728717188 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '1.020408164' to each side of the equation. -1.020408164 + 1.020408164 + t = -0.728717188 + 1.020408164 Combine like terms: -1.020408164 + 1.020408164 = 0.000000000 0.000000000 + t = -0.728717188 + 1.020408164 t = -0.728717188 + 1.020408164 Combine like terms: -0.728717188 + 1.020408164 = 0.291690976 t = 0.291690976 Simplifying t = 0.291690976

Solution

The solution to the problem is based on the solutions from the subproblems. t = {1.749125352, 0.291690976}

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