3x^2-5x-150=0

Simple and best practice solution for 3x^2-5x-150=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 3x^2-5x-150=0 equation:


Simplifying
3x2 + -5x + -150 = 0

Reorder the terms:
-150 + -5x + 3x2 = 0

Solving
-150 + -5x + 3x2 = 0

Solving for variable 'x'.

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

Divide each side by '3'.
-50 + -1.666666667x + x2 = 0

Move the constant term to the right:

Add '50' to each side of the equation.
-50 + -1.666666667x + 50 + x2 = 0 + 50

Reorder the terms:
-50 + 50 + -1.666666667x + x2 = 0 + 50

Combine like terms: -50 + 50 = 0
0 + -1.666666667x + x2 = 0 + 50
-1.666666667x + x2 = 0 + 50

Combine like terms: 0 + 50 = 50
-1.666666667x + x2 = 50

The x term is -1.666666667x.  Take half its coefficient (-0.8333333335).
Square it (0.6944444447) and add it to both sides.

Add '0.6944444447' to each side of the equation.
-1.666666667x + 0.6944444447 + x2 = 50 + 0.6944444447

Reorder the terms:
0.6944444447 + -1.666666667x + x2 = 50 + 0.6944444447

Combine like terms: 50 + 0.6944444447 = 50.6944444447
0.6944444447 + -1.666666667x + x2 = 50.6944444447

Factor a perfect square on the left side:
(x + -0.8333333335)(x + -0.8333333335) = 50.6944444447

Calculate the square root of the right side: 7.120003121

Break this problem into two subproblems by setting 
(x + -0.8333333335) equal to 7.120003121 and -7.120003121.

Subproblem 1

x + -0.8333333335 = 7.120003121 Simplifying x + -0.8333333335 = 7.120003121 Reorder the terms: -0.8333333335 + x = 7.120003121 Solving -0.8333333335 + x = 7.120003121 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.8333333335' to each side of the equation. -0.8333333335 + 0.8333333335 + x = 7.120003121 + 0.8333333335 Combine like terms: -0.8333333335 + 0.8333333335 = 0.0000000000 0.0000000000 + x = 7.120003121 + 0.8333333335 x = 7.120003121 + 0.8333333335 Combine like terms: 7.120003121 + 0.8333333335 = 7.9533364545 x = 7.9533364545 Simplifying x = 7.9533364545

Subproblem 2

x + -0.8333333335 = -7.120003121 Simplifying x + -0.8333333335 = -7.120003121 Reorder the terms: -0.8333333335 + x = -7.120003121 Solving -0.8333333335 + x = -7.120003121 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.8333333335' to each side of the equation. -0.8333333335 + 0.8333333335 + x = -7.120003121 + 0.8333333335 Combine like terms: -0.8333333335 + 0.8333333335 = 0.0000000000 0.0000000000 + x = -7.120003121 + 0.8333333335 x = -7.120003121 + 0.8333333335 Combine like terms: -7.120003121 + 0.8333333335 = -6.2866697875 x = -6.2866697875 Simplifying x = -6.2866697875

Solution

The solution to the problem is based on the solutions from the subproblems. x = {7.9533364545, -6.2866697875}

See similar equations:

| 3x(2x-10)=180 | | 5x-3x+4=-12 | | 21/3+1/3=c | | -2(-9r-1+6b)= | | 3=-9w | | 100+20(5.25)= | | 5x-9=-x-9 | | 4x^2+24=-20x | | 3j+-2(-2+-8j)= | | 4+5(x+3)=3x-21 | | 3-8(1+3x)=-101 | | -19-11a+a+16=-3-10a | | 5-2(-10.5+6)=14 | | x^3/7*x^4/7=00 | | 11a=143 | | x^3/7*x^4/7 | | 70=5n | | 9m=3(8m+25) | | -14=6+b | | 3p^2+8p-17=0 | | f(10)=6(10) | | 6(x-3)+2x=(2x+1)-22 | | -3w+-10+-3w-8-7w= | | 15u+v+8v= | | 18k=36 | | C=200+0.90(Y-t) | | 0.2x+0.8=-3.2 | | 7x^9/2=111 | | 14n-10-13n-11=3 | | 0.2+0.8=-3.2 | | -5(6x+5)=155 | | 2x+3-3=23 |

Equations solver categories