p^2+8p-15=

Simple and best practice solution for p^2+8p-15= 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+8p-15= equation:


Simplifying
p2 + 8p + -15 = 0

Reorder the terms:
-15 + 8p + p2 = 0

Solving
-15 + 8p + 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 + 8p + 15 + p2 = 0 + 15

Reorder the terms:
-15 + 15 + 8p + p2 = 0 + 15

Combine like terms: -15 + 15 = 0
0 + 8p + p2 = 0 + 15
8p + p2 = 0 + 15

Combine like terms: 0 + 15 = 15
8p + p2 = 15

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 = 15 + 16

Reorder the terms:
16 + 8p + p2 = 15 + 16

Combine like terms: 15 + 16 = 31
16 + 8p + p2 = 31

Factor a perfect square on the left side:
(p + 4)(p + 4) = 31

Calculate the square root of the right side: 5.567764363

Break this problem into two subproblems by setting 
(p + 4) equal to 5.567764363 and -5.567764363.

Subproblem 1

p + 4 = 5.567764363 Simplifying p + 4 = 5.567764363 Reorder the terms: 4 + p = 5.567764363 Solving 4 + p = 5.567764363 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 = 5.567764363 + -4 Combine like terms: 4 + -4 = 0 0 + p = 5.567764363 + -4 p = 5.567764363 + -4 Combine like terms: 5.567764363 + -4 = 1.567764363 p = 1.567764363 Simplifying p = 1.567764363

Subproblem 2

p + 4 = -5.567764363 Simplifying p + 4 = -5.567764363 Reorder the terms: 4 + p = -5.567764363 Solving 4 + p = -5.567764363 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 = -5.567764363 + -4 Combine like terms: 4 + -4 = 0 0 + p = -5.567764363 + -4 p = -5.567764363 + -4 Combine like terms: -5.567764363 + -4 = -9.567764363 p = -9.567764363 Simplifying p = -9.567764363

Solution

The solution to the problem is based on the solutions from the subproblems. p = {1.567764363, -9.567764363}

See similar equations:

| x^2-300x+5625=0 | | 4+10p=4(2p+2) | | x^2-300x+5675=0 | | 2(3z-1)-2(3-2z)=4 | | -58-9x+3x=74 | | 5x-15=15-x | | 5x-15=15-z | | -6(t+4)=12 | | 15x+10=10x | | x^2-8x=7 | | 6m-3-2m=7m-4-1m | | 3-3x=17+4x | | x+8=x-7 | | x*2+6X=7 | | 4x+24=7x | | a=4+-1b | | 2a=4a | | 2(4+-1b)+3b=11 | | 2(4+-1b)+3b=4 | | -7x+y=-19 | | 0.50x+0.45(50)=34.5 | | 3(-1.5b)-b=11 | | -2r+5.1=8.5 | | (-2x+5)(x-4)=0 | | -6(4x-1)+2=-24x+8 | | 4n+2.8=9.2 | | 2.8-2t=-3.2 | | 3m-2=m+8 | | x+.666=.1666 | | 8-2x-6-8x=4 | | 1.1=4y+13.9 | | 3a-b=11 |

Equations solver categories