8p^2-7p-12=0

Simple and best practice solution for 8p^2-7p-12=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 8p^2-7p-12=0 equation:


Simplifying
8p2 + -7p + -12 = 0

Reorder the terms:
-12 + -7p + 8p2 = 0

Solving
-12 + -7p + 8p2 = 0

Solving for variable 'p'.

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

Divide each side by '8'.
-1.5 + -0.875p + p2 = 0

Move the constant term to the right:

Add '1.5' to each side of the equation.
-1.5 + -0.875p + 1.5 + p2 = 0 + 1.5

Reorder the terms:
-1.5 + 1.5 + -0.875p + p2 = 0 + 1.5

Combine like terms: -1.5 + 1.5 = 0.0
0.0 + -0.875p + p2 = 0 + 1.5
-0.875p + p2 = 0 + 1.5

Combine like terms: 0 + 1.5 = 1.5
-0.875p + p2 = 1.5

The p term is -0.875p.  Take half its coefficient (-0.4375).
Square it (0.19140625) and add it to both sides.

Add '0.19140625' to each side of the equation.
-0.875p + 0.19140625 + p2 = 1.5 + 0.19140625

Reorder the terms:
0.19140625 + -0.875p + p2 = 1.5 + 0.19140625

Combine like terms: 1.5 + 0.19140625 = 1.69140625
0.19140625 + -0.875p + p2 = 1.69140625

Factor a perfect square on the left side:
(p + -0.4375)(p + -0.4375) = 1.69140625

Calculate the square root of the right side: 1.300540753

Break this problem into two subproblems by setting 
(p + -0.4375) equal to 1.300540753 and -1.300540753.

Subproblem 1

p + -0.4375 = 1.300540753 Simplifying p + -0.4375 = 1.300540753 Reorder the terms: -0.4375 + p = 1.300540753 Solving -0.4375 + p = 1.300540753 Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '0.4375' to each side of the equation. -0.4375 + 0.4375 + p = 1.300540753 + 0.4375 Combine like terms: -0.4375 + 0.4375 = 0.0000 0.0000 + p = 1.300540753 + 0.4375 p = 1.300540753 + 0.4375 Combine like terms: 1.300540753 + 0.4375 = 1.738040753 p = 1.738040753 Simplifying p = 1.738040753

Subproblem 2

p + -0.4375 = -1.300540753 Simplifying p + -0.4375 = -1.300540753 Reorder the terms: -0.4375 + p = -1.300540753 Solving -0.4375 + p = -1.300540753 Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '0.4375' to each side of the equation. -0.4375 + 0.4375 + p = -1.300540753 + 0.4375 Combine like terms: -0.4375 + 0.4375 = 0.0000 0.0000 + p = -1.300540753 + 0.4375 p = -1.300540753 + 0.4375 Combine like terms: -1.300540753 + 0.4375 = -0.863040753 p = -0.863040753 Simplifying p = -0.863040753

Solution

The solution to the problem is based on the solutions from the subproblems. p = {1.738040753, -0.863040753}

See similar equations:

| 0.6-0.5x=0 | | 5x+13=-22-2 | | 5a+9= | | 3x+4y-7x+y=55 | | 4(3x-4)=5x+40 | | 4-(-7)*(6-5*2)-15= | | 8x+1=7x+8 | | 5a+9whena=4 | | 5x+36=9x+4 | | 8.3e+6= | | ln(5x)+2=0 | | 4x^4-48x^2-100x+144=0 | | 4x+9y = 14 | | 6x+28=10x+4 | | 15g^3+10g^2+3g+2=0 | | 4x+9y = 6 | | 8x-11=7x-4 | | 2y+14=32 | | 8w+3w= | | 8x+32+4x=92 | | -5x+2+2x+4=-3x+8 | | 14-(x+5)=3(x+9)10 | | 7x-28=4x-4 | | (5-2*8)+7*(-2)= | | 10+13=32 | | 7h-30=23 | | 20.50x/20.50=410.00/20.50 | | cos(x)-sen(x)=0 | | 2c+c+12=70 | | 0.5x=7.5+0.2x | | 5(x-3)=-3 | | 42x+21= |

Equations solver categories