2p^2-20p-5=0

Simple and best practice solution for 2p^2-20p-5=0 equation. Check how easy it is, and learn it for the future. Our solution is simple, and easy to understand, so don`t hesitate to use it as a solution of your homework.

If it's not what You are looking for type in the equation solver your own equation and let us solve it.

Solution for 2p^2-20p-5=0 equation:


Simplifying
2p2 + -20p + -5 = 0

Reorder the terms:
-5 + -20p + 2p2 = 0

Solving
-5 + -20p + 2p2 = 0

Solving for variable 'p'.

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

Divide each side by '2'.
-2.5 + -10p + p2 = 0

Move the constant term to the right:

Add '2.5' to each side of the equation.
-2.5 + -10p + 2.5 + p2 = 0 + 2.5

Reorder the terms:
-2.5 + 2.5 + -10p + p2 = 0 + 2.5

Combine like terms: -2.5 + 2.5 = 0.0
0.0 + -10p + p2 = 0 + 2.5
-10p + p2 = 0 + 2.5

Combine like terms: 0 + 2.5 = 2.5
-10p + p2 = 2.5

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

Add '25' to each side of the equation.
-10p + 25 + p2 = 2.5 + 25

Reorder the terms:
25 + -10p + p2 = 2.5 + 25

Combine like terms: 2.5 + 25 = 27.5
25 + -10p + p2 = 27.5

Factor a perfect square on the left side:
(p + -5)(p + -5) = 27.5

Calculate the square root of the right side: 5.244044241

Break this problem into two subproblems by setting 
(p + -5) equal to 5.244044241 and -5.244044241.

Subproblem 1

p + -5 = 5.244044241 Simplifying p + -5 = 5.244044241 Reorder the terms: -5 + p = 5.244044241 Solving -5 + p = 5.244044241 Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '5' to each side of the equation. -5 + 5 + p = 5.244044241 + 5 Combine like terms: -5 + 5 = 0 0 + p = 5.244044241 + 5 p = 5.244044241 + 5 Combine like terms: 5.244044241 + 5 = 10.244044241 p = 10.244044241 Simplifying p = 10.244044241

Subproblem 2

p + -5 = -5.244044241 Simplifying p + -5 = -5.244044241 Reorder the terms: -5 + p = -5.244044241 Solving -5 + p = -5.244044241 Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '5' to each side of the equation. -5 + 5 + p = -5.244044241 + 5 Combine like terms: -5 + 5 = 0 0 + p = -5.244044241 + 5 p = -5.244044241 + 5 Combine like terms: -5.244044241 + 5 = -0.244044241 p = -0.244044241 Simplifying p = -0.244044241

Solution

The solution to the problem is based on the solutions from the subproblems. p = {10.244044241, -0.244044241}

See similar equations:

| 2t^2+11t=6 | | e^(1/6)x | | 3.2x-7.4= | | 5-2x/4=3x-1 | | 2/3f=8 | | 7y-21-9y+31= | | -3r+1=7 | | 5-4+7x+1=6x+3 | | 2(x-2)-4x=12 | | 7x-3x+7=x-4+11 | | 4x+9=11-3x | | 7x^2-1(-50x-48)=0 | | 6x^2-17x+13=20-32 | | 41/10 | | 7x^2-(-50x-48)=0 | | P+2q=5 | | ln(x-2)+ln(2x+5)=ln(x^2+5x-5) | | (-2a+160)=(9a+193) | | 180+0.25=385 | | √15/√5 | | 3z^2-11z-20=20 | | 2(x+2)=7(x-1)-14 | | 13(5c-1)-12=63c+13 | | 6x+8=8x-15 | | X=9+8y-16y | | (8x-5)(10x+5)= | | Z^2-15+54=0 | | 13x^2-3x-5=0 | | 6x^2-20x-30=0 | | 7x^2-1+50x-8=0 | | T=c(8+AB) | | 6y+4x=110 |

Equations solver categories