r^2+10r+35=0

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Solution for r^2+10r+35=0 equation:


Simplifying
r2 + 10r + 35 = 0

Reorder the terms:
35 + 10r + r2 = 0

Solving
35 + 10r + r2 = 0

Solving for variable 'r'.

Begin completing the square.

Move the constant term to the right:

Add '-35' to each side of the equation.
35 + 10r + -35 + r2 = 0 + -35

Reorder the terms:
35 + -35 + 10r + r2 = 0 + -35

Combine like terms: 35 + -35 = 0
0 + 10r + r2 = 0 + -35
10r + r2 = 0 + -35

Combine like terms: 0 + -35 = -35
10r + r2 = -35

The r term is 10r.  Take half its coefficient (5).
Square it (25) and add it to both sides.

Add '25' to each side of the equation.
10r + 25 + r2 = -35 + 25

Reorder the terms:
25 + 10r + r2 = -35 + 25

Combine like terms: -35 + 25 = -10
25 + 10r + r2 = -10

Factor a perfect square on the left side:
(r + 5)(r + 5) = -10

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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