7x^2+12x+18=11

Simple and best practice solution for 7x^2+12x+18=11 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 7x^2+12x+18=11 equation:


Simplifying
7x2 + 12x + 18 = 11

Reorder the terms:
18 + 12x + 7x2 = 11

Solving
18 + 12x + 7x2 = 11

Solving for variable 'x'.

Reorder the terms:
18 + -11 + 12x + 7x2 = 11 + -11

Combine like terms: 18 + -11 = 7
7 + 12x + 7x2 = 11 + -11

Combine like terms: 11 + -11 = 0
7 + 12x + 7x2 = 0

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

Divide each side by '7'.
1 + 1.714285714x + x2 = 0

Move the constant term to the right:

Add '-1' to each side of the equation.
1 + 1.714285714x + -1 + x2 = 0 + -1

Reorder the terms:
1 + -1 + 1.714285714x + x2 = 0 + -1

Combine like terms: 1 + -1 = 0
0 + 1.714285714x + x2 = 0 + -1
1.714285714x + x2 = 0 + -1

Combine like terms: 0 + -1 = -1
1.714285714x + x2 = -1

The x term is 1.714285714x.  Take half its coefficient (0.857142857).
Square it (0.7346938773) and add it to both sides.

Add '0.7346938773' to each side of the equation.
1.714285714x + 0.7346938773 + x2 = -1 + 0.7346938773

Reorder the terms:
0.7346938773 + 1.714285714x + x2 = -1 + 0.7346938773

Combine like terms: -1 + 0.7346938773 = -0.2653061227
0.7346938773 + 1.714285714x + x2 = -0.2653061227

Factor a perfect square on the left side:
(x + 0.857142857)(x + 0.857142857) = -0.2653061227

Can't calculate square root of the right side.

The solution to this equation could not be determined.

See similar equations:

| y-7=2(x+18) | | 2x+2(2x+6)=132 | | 4n+5=2n+15 | | 60-2x=16 | | 12x^2-30x+2=0 | | 5x-10=2(3x-4) | | 10.00=0.3(x)+5.33 | | 2+5a=37 | | 6.86=0.3(x)+5.33 | | -8(7+X)=24+2x | | 23t-1=11t+14 | | -11m-4=84 | | Y=0.3(1)+5.33 | | (3b-1/3)3 | | Y=0.3(3)+5.33 | | 4y-1=8+8y | | Y=0.3(5)+5.33 | | 10-2(z+3)=1 | | Y=0.3(3)+5.53 | | F(X)=4.5 | | 6(x-y)-3(x+y)= | | Y=0.3(1)+5.53 | | -6+x=8x-9 | | a+(-5)=-1 | | 3x+13=6x+2 | | A=6bc+c | | -5T^2-22T+15=0 | | 9600=40(x)+7000 | | 1.33r-6=.66r | | x^3+2*x^2-4*x-8=0 | | -45.58=6.7x+4 | | Y=40(300)+7000 |

Equations solver categories