0=4.9t^2-3t+7

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Solution for 0=4.9t^2-3t+7 equation:


Simplifying
0 = 4.9t2 + -3t + 7

Reorder the terms:
0 = 7 + -3t + 4.9t2

Solving
0 = 7 + -3t + 4.9t2

Solving for variable 't'.

Combine like terms: 0 + -7 = -7
-7 + 3t + -4.9t2 = 7 + -3t + 4.9t2 + -7 + 3t + -4.9t2

Reorder the terms:
-7 + 3t + -4.9t2 = 7 + -7 + -3t + 3t + 4.9t2 + -4.9t2

Combine like terms: 7 + -7 = 0
-7 + 3t + -4.9t2 = 0 + -3t + 3t + 4.9t2 + -4.9t2
-7 + 3t + -4.9t2 = -3t + 3t + 4.9t2 + -4.9t2

Combine like terms: -3t + 3t = 0
-7 + 3t + -4.9t2 = 0 + 4.9t2 + -4.9t2
-7 + 3t + -4.9t2 = 4.9t2 + -4.9t2

Combine like terms: 4.9t2 + -4.9t2 = 0.0
-7 + 3t + -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'.
1.428571429 + -0.612244898t + t2 = 0

Move the constant term to the right:

Add '-1.428571429' to each side of the equation.
1.428571429 + -0.612244898t + -1.428571429 + t2 = 0 + -1.428571429

Reorder the terms:
1.428571429 + -1.428571429 + -0.612244898t + t2 = 0 + -1.428571429

Combine like terms: 1.428571429 + -1.428571429 = 0.000000000
0.000000000 + -0.612244898t + t2 = 0 + -1.428571429
-0.612244898t + t2 = 0 + -1.428571429

Combine like terms: 0 + -1.428571429 = -1.428571429
-0.612244898t + t2 = -1.428571429

The t term is -0.612244898t.  Take half its coefficient (-0.306122449).
Square it (0.09371095378) and add it to both sides.

Add '0.09371095378' to each side of the equation.
-0.612244898t + 0.09371095378 + t2 = -1.428571429 + 0.09371095378

Reorder the terms:
0.09371095378 + -0.612244898t + t2 = -1.428571429 + 0.09371095378

Combine like terms: -1.428571429 + 0.09371095378 = -1.33486047522
0.09371095378 + -0.612244898t + t2 = -1.33486047522

Factor a perfect square on the left side:
(t + -0.306122449)(t + -0.306122449) = -1.33486047522

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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