25t^2-20t+7=0

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Solution for 25t^2-20t+7=0 equation:


Simplifying
25t2 + -20t + 7 = 0

Reorder the terms:
7 + -20t + 25t2 = 0

Solving
7 + -20t + 25t2 = 0

Solving for variable 't'.

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

Divide each side by '25'.
0.28 + -0.8t + t2 = 0

Move the constant term to the right:

Add '-0.28' to each side of the equation.
0.28 + -0.8t + -0.28 + t2 = 0 + -0.28

Reorder the terms:
0.28 + -0.28 + -0.8t + t2 = 0 + -0.28

Combine like terms: 0.28 + -0.28 = 0.00
0.00 + -0.8t + t2 = 0 + -0.28
-0.8t + t2 = 0 + -0.28

Combine like terms: 0 + -0.28 = -0.28
-0.8t + t2 = -0.28

The t term is -0.8t.  Take half its coefficient (-0.4).
Square it (0.16) and add it to both sides.

Add '0.16' to each side of the equation.
-0.8t + 0.16 + t2 = -0.28 + 0.16

Reorder the terms:
0.16 + -0.8t + t2 = -0.28 + 0.16

Combine like terms: -0.28 + 0.16 = -0.12
0.16 + -0.8t + t2 = -0.12

Factor a perfect square on the left side:
(t + -0.4)(t + -0.4) = -0.12

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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