8x^2-16x-60=7

Simple and best practice solution for 8x^2-16x-60=7 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 8x^2-16x-60=7 equation:


Simplifying
8x2 + -16x + -60 = 7

Reorder the terms:
-60 + -16x + 8x2 = 7

Solving
-60 + -16x + 8x2 = 7

Solving for variable 'x'.

Reorder the terms:
-60 + -7 + -16x + 8x2 = 7 + -7

Combine like terms: -60 + -7 = -67
-67 + -16x + 8x2 = 7 + -7

Combine like terms: 7 + -7 = 0
-67 + -16x + 8x2 = 0

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

Divide each side by '8'.
-8.375 + -2x + x2 = 0

Move the constant term to the right:

Add '8.375' to each side of the equation.
-8.375 + -2x + 8.375 + x2 = 0 + 8.375

Reorder the terms:
-8.375 + 8.375 + -2x + x2 = 0 + 8.375

Combine like terms: -8.375 + 8.375 = 0.000
0.000 + -2x + x2 = 0 + 8.375
-2x + x2 = 0 + 8.375

Combine like terms: 0 + 8.375 = 8.375
-2x + x2 = 8.375

The x term is -2x.  Take half its coefficient (-1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
-2x + 1 + x2 = 8.375 + 1

Reorder the terms:
1 + -2x + x2 = 8.375 + 1

Combine like terms: 8.375 + 1 = 9.375
1 + -2x + x2 = 9.375

Factor a perfect square on the left side:
(x + -1)(x + -1) = 9.375

Calculate the square root of the right side: 3.061862178

Break this problem into two subproblems by setting 
(x + -1) equal to 3.061862178 and -3.061862178.

Subproblem 1

x + -1 = 3.061862178 Simplifying x + -1 = 3.061862178 Reorder the terms: -1 + x = 3.061862178 Solving -1 + x = 3.061862178 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + x = 3.061862178 + 1 Combine like terms: -1 + 1 = 0 0 + x = 3.061862178 + 1 x = 3.061862178 + 1 Combine like terms: 3.061862178 + 1 = 4.061862178 x = 4.061862178 Simplifying x = 4.061862178

Subproblem 2

x + -1 = -3.061862178 Simplifying x + -1 = -3.061862178 Reorder the terms: -1 + x = -3.061862178 Solving -1 + x = -3.061862178 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + x = -3.061862178 + 1 Combine like terms: -1 + 1 = 0 0 + x = -3.061862178 + 1 x = -3.061862178 + 1 Combine like terms: -3.061862178 + 1 = -2.061862178 x = -2.061862178 Simplifying x = -2.061862178

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4.061862178, -2.061862178}

See similar equations:

| 27a^5b^3+8a^8= | | tanx^3= | | 0=2x^2+10x+8 | | 51-3x=30 | | =3.25(7-5*2+6) | | 25-20x^2+x^4=0 | | F(x)=ln(10x) | | 2x-25=3(2x+1) | | -12.8+-3.5=x | | 7(4-a)+1=1-4(a+5) | | 9(n-9)-(5-n)= | | -10x-10=-1-3x | | f(x)=x^2+13x+31 | | =7+5*2-6 | | x^2+y^2=64-16y-y^2 | | x+8x+12=-4 | | 2x^4-40x^2+50=0 | | 3n^2-.75=90 | | 4p-4=8 | | f(x)=tan(3x+2) | | (4x-3)(3x+1)=0 | | x-6+3=10 | | 20ax^2+16ax+12a=4a | | 4(2X+4)+3(5X+3)= | | (x^2)+24x-11496=0 | | 3z+2=29 | | 5=-3+35 | | 4(8Sq-8)= | | 7x-(1+4y)+16x= | | x^2+24x-1196=0 | | 2(5m+4)+4(6m-1)= | | 2(x-1)-5(x+2)=-8 |

Equations solver categories