0.7*x^2=1.4*x+0.7

Simple and best practice solution for 0.7*x^2=1.4*x+0.7 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 0.7*x^2=1.4*x+0.7 equation:


Simplifying
0.7x2 = 1.4x + 0.7

Reorder the terms:
0.7x2 = 0.7 + 1.4x

Solving
0.7x2 = 0.7 + 1.4x

Solving for variable 'x'.

Reorder the terms:
-0.7 + -1.4x + 0.7x2 = 0.7 + 1.4x + -0.7 + -1.4x

Reorder the terms:
-0.7 + -1.4x + 0.7x2 = 0.7 + -0.7 + 1.4x + -1.4x

Combine like terms: 0.7 + -0.7 = 0.0
-0.7 + -1.4x + 0.7x2 = 0.0 + 1.4x + -1.4x
-0.7 + -1.4x + 0.7x2 = 1.4x + -1.4x

Combine like terms: 1.4x + -1.4x = 0.0
-0.7 + -1.4x + 0.7x2 = 0.0

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

Divide each side by '0.7'.
-1 + -2x + x2 = 0

Move the constant term to the right:

Add '1' to each side of the equation.
-1 + -2x + 1 + x2 = 0 + 1

Reorder the terms:
-1 + 1 + -2x + x2 = 0 + 1

Combine like terms: -1 + 1 = 0
0 + -2x + x2 = 0 + 1
-2x + x2 = 0 + 1

Combine like terms: 0 + 1 = 1
-2x + x2 = 1

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 = 1 + 1

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

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

Factor a perfect square on the left side:
(x + -1)(x + -1) = 2

Calculate the square root of the right side: 1.414213562

Break this problem into two subproblems by setting 
(x + -1) equal to 1.414213562 and -1.414213562.

Subproblem 1

x + -1 = 1.414213562 Simplifying x + -1 = 1.414213562 Reorder the terms: -1 + x = 1.414213562 Solving -1 + x = 1.414213562 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 = 1.414213562 + 1 Combine like terms: -1 + 1 = 0 0 + x = 1.414213562 + 1 x = 1.414213562 + 1 Combine like terms: 1.414213562 + 1 = 2.414213562 x = 2.414213562 Simplifying x = 2.414213562

Subproblem 2

x + -1 = -1.414213562 Simplifying x + -1 = -1.414213562 Reorder the terms: -1 + x = -1.414213562 Solving -1 + x = -1.414213562 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 = -1.414213562 + 1 Combine like terms: -1 + 1 = 0 0 + x = -1.414213562 + 1 x = -1.414213562 + 1 Combine like terms: -1.414213562 + 1 = -0.414213562 x = -0.414213562 Simplifying x = -0.414213562

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.414213562, -0.414213562}

See similar equations:

| 4x^2-40x+56=0 | | -2(-3s+6a)=30-s | | -1/6x=-4 | | 5*p^2=26p-5 | | 16u^2-6u-1=0 | | 20+5/3r=-20 | | -10y-3y=39 | | 4x-9=7.x | | 3x+37=14 | | 4x+5=23+7(2+56) | | 10x^2+64=0 | | 13g/3+14 | | 3/5x=45 | | 15x-7+12x+2=4y+3+5y-2 | | 9x^2=-4x+16 | | 1/3x=24 | | -x+6y=21 | | 4/5t-1=11 | | x/2.54=132/640 | | 5x+(3y-2x)=5x+(-2x+3y) | | C^2-13=0 | | x^2+4x-3.5=0 | | 5.3+1.9n=0.93 | | 3x^2+11x+1=0 | | 2+3x=7+5x | | 0=1800+.2x^2-.002x^3 | | -2(x-6)=3x | | 10m(-8)= | | y+9=2(x+5) | | (5/9)g+8=(1/6)g+1 | | -7-1-2+4+3-5+12+19=x | | 3(2+6x)-8(x-5)=4(3x+2) |

Equations solver categories