2p^2-16p-3=0

Simple and best practice solution for 2p^2-16p-3=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^2-16p-3=0 equation:


Simplifying
2p2 + -16p + -3 = 0

Reorder the terms:
-3 + -16p + 2p2 = 0

Solving
-3 + -16p + 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'.
-1.5 + -8p + p2 = 0

Move the constant term to the right:

Add '1.5' to each side of the equation.
-1.5 + -8p + 1.5 + p2 = 0 + 1.5

Reorder the terms:
-1.5 + 1.5 + -8p + p2 = 0 + 1.5

Combine like terms: -1.5 + 1.5 = 0.0
0.0 + -8p + p2 = 0 + 1.5
-8p + p2 = 0 + 1.5

Combine like terms: 0 + 1.5 = 1.5
-8p + p2 = 1.5

The p term is -8p.  Take half its coefficient (-4).
Square it (16) and add it to both sides.

Add '16' to each side of the equation.
-8p + 16 + p2 = 1.5 + 16

Reorder the terms:
16 + -8p + p2 = 1.5 + 16

Combine like terms: 1.5 + 16 = 17.5
16 + -8p + p2 = 17.5

Factor a perfect square on the left side:
(p + -4)(p + -4) = 17.5

Calculate the square root of the right side: 4.183300133

Break this problem into two subproblems by setting 
(p + -4) equal to 4.183300133 and -4.183300133.

Subproblem 1

p + -4 = 4.183300133 Simplifying p + -4 = 4.183300133 Reorder the terms: -4 + p = 4.183300133 Solving -4 + p = 4.183300133 Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + p = 4.183300133 + 4 Combine like terms: -4 + 4 = 0 0 + p = 4.183300133 + 4 p = 4.183300133 + 4 Combine like terms: 4.183300133 + 4 = 8.183300133 p = 8.183300133 Simplifying p = 8.183300133

Subproblem 2

p + -4 = -4.183300133 Simplifying p + -4 = -4.183300133 Reorder the terms: -4 + p = -4.183300133 Solving -4 + p = -4.183300133 Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + p = -4.183300133 + 4 Combine like terms: -4 + 4 = 0 0 + p = -4.183300133 + 4 p = -4.183300133 + 4 Combine like terms: -4.183300133 + 4 = -0.183300133 p = -0.183300133 Simplifying p = -0.183300133

Solution

The solution to the problem is based on the solutions from the subproblems. p = {8.183300133, -0.183300133}

See similar equations:

| 3y=17-8x | | 2(x-3)-x=2x+8 | | f-1(x)=9x^2-90x+18 | | y^2=2y+48 | | -3+4q=-0.8 | | 20x+10x=4380 | | 7n-11n-11=3 | | f(x)=9x^2-90x+18 | | 51x+41x=644 | | 4x-9=7x+8 | | 55=0.17q+0.08(q-600) | | 6(2-4w)+18=-114 | | 11x+24x=175 | | 3-4x=10+10 | | 8n+8-4n+28=3n+54+4n | | p^2-1p+20=0 | | 17x+8=90 | | -6x+5=13 | | 11n=34 | | 6(2-k)+11=-11(k-4)-8 | | 8y+44=20 | | 16w-11=14w-4 | | 5i+6=7+2 | | 2(3x-2)+2-4x=14 | | 2(3x-2)+2-4=14 | | x^2-x+8=x^2+2x-7 | | 2x-9y=18fory | | 2x+8=6*x | | 5-4s=6s+15 | | 2w(4w-5)=3 | | 0.1(x+50)+0.5x=14 | | log(57-7x)=0 |

Equations solver categories