2Q^2+20Q-10=

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Solution for 2Q^2+20Q-10= equation:


Simplifying
2Q2 + 20Q + -10 = 0

Reorder the terms:
-10 + 20Q + 2Q2 = 0

Solving
-10 + 20Q + 2Q2 = 0

Solving for variable 'Q'.

Factor out the Greatest Common Factor (GCF), '2'.
2(-5 + 10Q + Q2) = 0

Ignore the factor 2.

Subproblem 1

Set the factor '(-5 + 10Q + Q2)' equal to zero and attempt to solve: Simplifying -5 + 10Q + Q2 = 0 Solving -5 + 10Q + Q2 = 0 Begin completing the square. Move the constant term to the right: Add '5' to each side of the equation. -5 + 10Q + 5 + Q2 = 0 + 5 Reorder the terms: -5 + 5 + 10Q + Q2 = 0 + 5 Combine like terms: -5 + 5 = 0 0 + 10Q + Q2 = 0 + 5 10Q + Q2 = 0 + 5 Combine like terms: 0 + 5 = 5 10Q + Q2 = 5 The Q term is 10Q. Take half its coefficient (5). Square it (25) and add it to both sides. Add '25' to each side of the equation. 10Q + 25 + Q2 = 5 + 25 Reorder the terms: 25 + 10Q + Q2 = 5 + 25 Combine like terms: 5 + 25 = 30 25 + 10Q + Q2 = 30 Factor a perfect square on the left side: (Q + 5)(Q + 5) = 30 Calculate the square root of the right side: 5.477225575 Break this problem into two subproblems by setting (Q + 5) equal to 5.477225575 and -5.477225575.

Subproblem 1

Q + 5 = 5.477225575 Simplifying Q + 5 = 5.477225575 Reorder the terms: 5 + Q = 5.477225575 Solving 5 + Q = 5.477225575 Solving for variable 'Q'. Move all terms containing Q to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + Q = 5.477225575 + -5 Combine like terms: 5 + -5 = 0 0 + Q = 5.477225575 + -5 Q = 5.477225575 + -5 Combine like terms: 5.477225575 + -5 = 0.477225575 Q = 0.477225575 Simplifying Q = 0.477225575

Subproblem 2

Q + 5 = -5.477225575 Simplifying Q + 5 = -5.477225575 Reorder the terms: 5 + Q = -5.477225575 Solving 5 + Q = -5.477225575 Solving for variable 'Q'. Move all terms containing Q to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + Q = -5.477225575 + -5 Combine like terms: 5 + -5 = 0 0 + Q = -5.477225575 + -5 Q = -5.477225575 + -5 Combine like terms: -5.477225575 + -5 = -10.477225575 Q = -10.477225575 Simplifying Q = -10.477225575

Solution

The solution to the problem is based on the solutions from the subproblems. Q = {0.477225575, -10.477225575}

Solution

Q = {0.477225575, -10.477225575}

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