49x^2-4=-21x

Simple and best practice solution for 49x^2-4=-21x 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 49x^2-4=-21x equation:


Simplifying
49x2 + -4 = -21x

Reorder the terms:
-4 + 49x2 = -21x

Solving
-4 + 49x2 = -21x

Solving for variable 'x'.

Reorder the terms:
-4 + 21x + 49x2 = -21x + 21x

Combine like terms: -21x + 21x = 0
-4 + 21x + 49x2 = 0

Factor a trinomial.
(-4 + -7x)(1 + -7x) = 0

Subproblem 1

Set the factor '(-4 + -7x)' equal to zero and attempt to solve: Simplifying -4 + -7x = 0 Solving -4 + -7x = 0 Move all terms containing x to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + -7x = 0 + 4 Combine like terms: -4 + 4 = 0 0 + -7x = 0 + 4 -7x = 0 + 4 Combine like terms: 0 + 4 = 4 -7x = 4 Divide each side by '-7'. x = -0.5714285714 Simplifying x = -0.5714285714

Subproblem 2

Set the factor '(1 + -7x)' equal to zero and attempt to solve: Simplifying 1 + -7x = 0 Solving 1 + -7x = 0 Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + -7x = 0 + -1 Combine like terms: 1 + -1 = 0 0 + -7x = 0 + -1 -7x = 0 + -1 Combine like terms: 0 + -1 = -1 -7x = -1 Divide each side by '-7'. x = 0.1428571429 Simplifying x = 0.1428571429

Solution

x = {-0.5714285714, 0.1428571429}

See similar equations:

| (2/9)y=4 | | 20q^2-23qt+6t^2=0 | | 2lnx-ln(2x-9)=ln(5x)-ln(x-4) | | 27-12=3(x-2) | | 4-8u=2u+4 | | 33+4y-9=14y-11-3y | | 5x/2=-7 | | x+19+4x=-43-4x-46 | | 2y=50y | | Log(X)=-4 | | -8g-40=-18g | | 2x^2+7x-154=0 | | 8x-7=10x+10 | | 24x^2-16x-30= | | 54m-2=110 | | x^2+8x-152=0 | | x^2-630=0 | | 6x^3+5x+9=0 | | 1.5x+6y=22 | | 5z(z+7)(z+5)=0 | | 0.21x=1 | | 2x^2+7x-152=0 | | (x^2+9)(3x+8)= | | -5=-x/2 | | 35x-3=32 | | 2x=52y | | 9x+4=9(x-2) | | 100x+400=500 | | 19x+4=21x-2 | | y=(4x^2+5)(9x^3-7x) | | 2c^2+17c+35=0 | | 2x*3x*x=0 |

Equations solver categories