-5b^2+2b-9=-3

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Solution for -5b^2+2b-9=-3 equation:


Simplifying
-5b2 + 2b + -9 = -3

Reorder the terms:
-9 + 2b + -5b2 = -3

Solving
-9 + 2b + -5b2 = -3

Solving for variable 'b'.

Reorder the terms:
-9 + 3 + 2b + -5b2 = -3 + 3

Combine like terms: -9 + 3 = -6
-6 + 2b + -5b2 = -3 + 3

Combine like terms: -3 + 3 = 0
-6 + 2b + -5b2 = 0

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

Divide each side by '-5'.
1.2 + -0.4b + b2 = 0

Move the constant term to the right:

Add '-1.2' to each side of the equation.
1.2 + -0.4b + -1.2 + b2 = 0 + -1.2

Reorder the terms:
1.2 + -1.2 + -0.4b + b2 = 0 + -1.2

Combine like terms: 1.2 + -1.2 = 0.0
0.0 + -0.4b + b2 = 0 + -1.2
-0.4b + b2 = 0 + -1.2

Combine like terms: 0 + -1.2 = -1.2
-0.4b + b2 = -1.2

The b term is -0.4b.  Take half its coefficient (-0.2).
Square it (0.04) and add it to both sides.

Add '0.04' to each side of the equation.
-0.4b + 0.04 + b2 = -1.2 + 0.04

Reorder the terms:
0.04 + -0.4b + b2 = -1.2 + 0.04

Combine like terms: -1.2 + 0.04 = -1.16
0.04 + -0.4b + b2 = -1.16

Factor a perfect square on the left side:
(b + -0.2)(b + -0.2) = -1.16

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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