7=-5t^2+6t

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Solution for 7=-5t^2+6t equation:


Simplifying
7 = -5t2 + 6t

Reorder the terms:
7 = 6t + -5t2

Solving
7 = 6t + -5t2

Solving for variable 't'.

Reorder the terms:
7 + -6t + 5t2 = 6t + -6t + -5t2 + 5t2

Combine like terms: 6t + -6t = 0
7 + -6t + 5t2 = 0 + -5t2 + 5t2
7 + -6t + 5t2 = -5t2 + 5t2

Combine like terms: -5t2 + 5t2 = 0
7 + -6t + 5t2 = 0

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

Divide each side by '5'.
1.4 + -1.2t + t2 = 0

Move the constant term to the right:

Add '-1.4' to each side of the equation.
1.4 + -1.2t + -1.4 + t2 = 0 + -1.4

Reorder the terms:
1.4 + -1.4 + -1.2t + t2 = 0 + -1.4

Combine like terms: 1.4 + -1.4 = 0.0
0.0 + -1.2t + t2 = 0 + -1.4
-1.2t + t2 = 0 + -1.4

Combine like terms: 0 + -1.4 = -1.4
-1.2t + t2 = -1.4

The t term is -1.2t.  Take half its coefficient (-0.6).
Square it (0.36) and add it to both sides.

Add '0.36' to each side of the equation.
-1.2t + 0.36 + t2 = -1.4 + 0.36

Reorder the terms:
0.36 + -1.2t + t2 = -1.4 + 0.36

Combine like terms: -1.4 + 0.36 = -1.04
0.36 + -1.2t + t2 = -1.04

Factor a perfect square on the left side:
(t + -0.6)(t + -0.6) = -1.04

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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