p^2-10p-15=0

Simple and best practice solution for p^2-10p-15=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 p^2-10p-15=0 equation:


Simplifying
p2 + -10p + -15 = 0

Reorder the terms:
-15 + -10p + p2 = 0

Solving
-15 + -10p + p2 = 0

Solving for variable 'p'.

Begin completing the square.

Move the constant term to the right:

Add '15' to each side of the equation.
-15 + -10p + 15 + p2 = 0 + 15

Reorder the terms:
-15 + 15 + -10p + p2 = 0 + 15

Combine like terms: -15 + 15 = 0
0 + -10p + p2 = 0 + 15
-10p + p2 = 0 + 15

Combine like terms: 0 + 15 = 15
-10p + p2 = 15

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 = 15 + 25

Reorder the terms:
25 + -10p + p2 = 15 + 25

Combine like terms: 15 + 25 = 40
25 + -10p + p2 = 40

Factor a perfect square on the left side:
(p + -5)(p + -5) = 40

Calculate the square root of the right side: 6.32455532

Break this problem into two subproblems by setting 
(p + -5) equal to 6.32455532 and -6.32455532.

Subproblem 1

p + -5 = 6.32455532 Simplifying p + -5 = 6.32455532 Reorder the terms: -5 + p = 6.32455532 Solving -5 + p = 6.32455532 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 = 6.32455532 + 5 Combine like terms: -5 + 5 = 0 0 + p = 6.32455532 + 5 p = 6.32455532 + 5 Combine like terms: 6.32455532 + 5 = 11.32455532 p = 11.32455532 Simplifying p = 11.32455532

Subproblem 2

p + -5 = -6.32455532 Simplifying p + -5 = -6.32455532 Reorder the terms: -5 + p = -6.32455532 Solving -5 + p = -6.32455532 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 = -6.32455532 + 5 Combine like terms: -5 + 5 = 0 0 + p = -6.32455532 + 5 p = -6.32455532 + 5 Combine like terms: -6.32455532 + 5 = -1.32455532 p = -1.32455532 Simplifying p = -1.32455532

Solution

The solution to the problem is based on the solutions from the subproblems. p = {11.32455532, -1.32455532}

See similar equations:

| 3t-18=4t-16 | | 6x-2=70 | | -498=6(9x+16) | | 20=-3x+7(-2x+25) | | -7(x+8)-44=3-61 | | 8x^3-336x^2+2760x+1608= | | 2(7-3x)+1=2x-1 | | (3x+4)(x-3)=10 | | 8+-176=-72 | | 567=-6(10x-16) | | 8+176=-72 | | (x-8)*(x-8)-18=-2 | | 4k-7=2+k | | 504=-16x^2+484 | | 2(g-2)-4=3(g-3) | | 209-3x=33x+21 | | 75-6x=12x+15 | | 3+5d=11+4d | | 6x-7=3x-11 | | 9(2x+14)-4(3x+17)=64 | | -3x+6=18 | | 3x^2-27x=-2x^2-9x-16 | | 5.50+4.00(486-a)=2416 | | -486=6(7x-11) | | 7-8x=47-22x | | 3x-5=5x+12 | | 4(5y-4)=12y | | -61*3=x | | -120=-4(7x+9) | | 5y-9=7y-13 | | 4x+6=4x+6 | | 3x=5+2(3+4) |

Equations solver categories