2p^2+p-39=0

Simple and best practice solution for 2p^2+p-39=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+p-39=0 equation:


Simplifying
2p2 + p + -39 = 0

Reorder the terms:
-39 + p + 2p2 = 0

Solving
-39 + p + 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'.
-19.5 + 0.5p + p2 = 0

Move the constant term to the right:

Add '19.5' to each side of the equation.
-19.5 + 0.5p + 19.5 + p2 = 0 + 19.5

Reorder the terms:
-19.5 + 19.5 + 0.5p + p2 = 0 + 19.5

Combine like terms: -19.5 + 19.5 = 0.0
0.0 + 0.5p + p2 = 0 + 19.5
0.5p + p2 = 0 + 19.5

Combine like terms: 0 + 19.5 = 19.5
0.5p + p2 = 19.5

The p term is p.  Take half its coefficient (0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
0.5p + 0.25 + p2 = 19.5 + 0.25

Reorder the terms:
0.25 + 0.5p + p2 = 19.5 + 0.25

Combine like terms: 19.5 + 0.25 = 19.75
0.25 + 0.5p + p2 = 19.75

Factor a perfect square on the left side:
(p + 0.5)(p + 0.5) = 19.75

Calculate the square root of the right side: 4.444097209

Break this problem into two subproblems by setting 
(p + 0.5) equal to 4.444097209 and -4.444097209.

Subproblem 1

p + 0.5 = 4.444097209 Simplifying p + 0.5 = 4.444097209 Reorder the terms: 0.5 + p = 4.444097209 Solving 0.5 + p = 4.444097209 Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + p = 4.444097209 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + p = 4.444097209 + -0.5 p = 4.444097209 + -0.5 Combine like terms: 4.444097209 + -0.5 = 3.944097209 p = 3.944097209 Simplifying p = 3.944097209

Subproblem 2

p + 0.5 = -4.444097209 Simplifying p + 0.5 = -4.444097209 Reorder the terms: 0.5 + p = -4.444097209 Solving 0.5 + p = -4.444097209 Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + p = -4.444097209 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + p = -4.444097209 + -0.5 p = -4.444097209 + -0.5 Combine like terms: -4.444097209 + -0.5 = -4.944097209 p = -4.944097209 Simplifying p = -4.944097209

Solution

The solution to the problem is based on the solutions from the subproblems. p = {3.944097209, -4.944097209}

See similar equations:

| -12m-11=79 | | x-2(3)=x+6 | | 8(x+2)-8= | | m-3xm=8 | | 12x-(2y-12)=1+9x | | 2(5)-(-13)= | | 4/7= | | 2(5)-13= | | m-3xm+3=11 | | 39=y-12 | | 8219+9= | | 8-3g=(-2)+2g | | 4(x+2)=2x-9 | | x-(2*3)=x+6 | | u^2+9u+14=0 | | 3(x+3.15)=2x | | 10r^3+8r^2+6r= | | 4x^2=1000 | | X^2-10=100 | | 21=2(x+4) | | -7(-3n-20)=17+8n+14 | | 5x+4x+3x=4-8 | | 4X^2-8=-20 | | 0.2(b-12)=0.6b | | -8.65+2.6d=3.1d | | 2X^2-7=74 | | (2t-1)*4+2t*4=0 | | X^2+6=17 | | X^2+8=72 | | 4X^2+9=41 | | 7x+2=5x^2 | | X^2+12=x^2 |

Equations solver categories