(-0.5x^2)+1.5x+9=4

Simple and best practice solution for (-0.5x^2)+1.5x+9=4 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 (-0.5x^2)+1.5x+9=4 equation:


Simplifying
(-0.5x2) + 1.5x + 9 = 4

Reorder the terms:
9 + 1.5x + (-0.5x2) = 4

Solving
9 + 1.5x + (-0.5x2) = 4

Solving for variable 'x'.

Reorder the terms:
9 + -4 + 1.5x + (-0.5x2) = 4 + -4

Combine like terms: 9 + -4 = 5
5 + 1.5x + (-0.5x2) = 4 + -4

Combine like terms: 4 + -4 = 0
5 + 1.5x + (-0.5x2) = 0

Begin completing the square.  Divide all terms by
-0.5 the coefficient of the squared term: 

Divide each side by '-0.5'.
-10 + -3x + x2 = 0

Move the constant term to the right:

Add '10' to each side of the equation.
-10 + -3x + 10 + x2 = 0 + 10

Reorder the terms:
-10 + 10 + -3x + x2 = 0 + 10

Combine like terms: -10 + 10 = 0
0 + -3x + x2 = 0 + 10
-3x + x2 = 0 + 10

Combine like terms: 0 + 10 = 10
-3x + x2 = 10

The x term is -3x.  Take half its coefficient (-1.5).
Square it (2.25) and add it to both sides.

Add '2.25' to each side of the equation.
-3x + 2.25 + x2 = 10 + 2.25

Reorder the terms:
2.25 + -3x + x2 = 10 + 2.25

Combine like terms: 10 + 2.25 = 12.25
2.25 + -3x + x2 = 12.25

Factor a perfect square on the left side:
((x) + -1.5)((x) + -1.5) = 12.25

Calculate the square root of the right side: 3.5

Break this problem into two subproblems by setting 
((x) + -1.5) equal to 3.5 and -3.5.

Subproblem 1

(x) + -1.5 = 3.5 Simplifying (x) + -1.5 = 3.5 x + -1.5 = 3.5 Reorder the terms: -1.5 + x = 3.5 Solving -1.5 + x = 3.5 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.5' to each side of the equation. -1.5 + 1.5 + x = 3.5 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + x = 3.5 + 1.5 x = 3.5 + 1.5 Combine like terms: 3.5 + 1.5 = 5 x = 5 Simplifying x = 5

Subproblem 2

(x) + -1.5 = -3.5 Simplifying (x) + -1.5 = -3.5 x + -1.5 = -3.5 Reorder the terms: -1.5 + x = -3.5 Solving -1.5 + x = -3.5 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.5' to each side of the equation. -1.5 + 1.5 + x = -3.5 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + x = -3.5 + 1.5 x = -3.5 + 1.5 Combine like terms: -3.5 + 1.5 = -2 x = -2 Simplifying x = -2

Solution

The solution to the problem is based on the solutions from the subproblems. x = {5, -2}

See similar equations:

| 26=3 | | (6)(6)-4(6-2)= | | 4x+8(x-2)=12 | | 2x+7=-4x+7+6x | | 6x^2-12x+2=0 | | (2/p+s)-(11/s+p)=0 | | 2x-3=(2x+1) | | 0.8x-(0.2x^2)+1=0 | | 9-(4y-9)=1-5y | | -7/6=p/42 | | -5/9x=315 | | f(x)=3x^2-70 | | 3y/10-5=y/5+2 | | 9(5y-2)-(5y+2)= | | -10.3=w-5.80 | | x^2/x^2=0 | | 3x+x=120 | | 1/6x18 | | 3r+36/12=4r-12/4 | | 7x+14=4x-1 | | 3−x≥3x+19=x | | x^2-x=5x-5 | | 3−x≥3x+19 | | (3x-5)+2x=90 | | 6g-10= | | 0=7y | | 7x^2+6=17x-5x^2 | | 7x^2+6=18x-5x^2 | | 7x^2+6=18x^2-5x^2 | | 3(6-a)+7-2sia=4 | | 0.43+2x=-136 | | 15x^2-37x-8=0 |

Equations solver categories