9x2=2

Simple and best practice solution for 9x2=2 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 9x2=2 equation:



9x^2=2
We move all terms to the left:
9x^2-(2)=0
a = 9; b = 0; c = -2;
Δ = b2-4ac
Δ = 02-4·9·(-2)
Δ = 72
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

The end solution:
$\sqrt{\Delta}=\sqrt{72}=\sqrt{36*2}=\sqrt{36}*\sqrt{2}=6\sqrt{2}$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(0)-6\sqrt{2}}{2*9}=\frac{0-6\sqrt{2}}{18} =-\frac{6\sqrt{2}}{18} =-\frac{\sqrt{2}}{3} $
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(0)+6\sqrt{2}}{2*9}=\frac{0+6\sqrt{2}}{18} =\frac{6\sqrt{2}}{18} =\frac{\sqrt{2}}{3} $

See similar equations:

| 3x+7=8x-37 | | 4v+4-6=v-12+39 | | 15t+10=-29 | | -288+c=362 | | 52+u+13=4+4u+47 | | 9-4(3-2y)=57 | | 2z=3z-9 | | x*1.3=1 | | 3t+17=t+39 | | x=-63/16 | | -8+n=6.3 | | 4.6+10m=8.34 | | 2e+5=4e-7 | | 120000/(1+48*2.718^(-0.015x)=24*2.718^(0.055x) | | 7p+13=90 | | 8p+13=90 | | 6x+1=9x-3 | | 3x-2x-2-6(x-2)(x+2)=-12 | | x-1x-3-1x=2x-3 | | x+22x-x+14=-12 | | 5(x-3)+2=-5x-13 | | -3(j+-2)=18 | | -3(s+13)=9 | | 2(t-50)=10 | | -2(q-20)=10 | | 240=-16t^2+128t | | 3(y-10)=18 | | 2(q-9)=10 | | 3(d+10=18 | | 3(5y-6=12 | | 2x=4x=x | | 24+t+13=59 |

Equations solver categories