(9x-7)(9x-7)=0

Simple and best practice solution for (9x-7)(9x-7)=0 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 (9x-7)(9x-7)=0 equation: 



(9x-7)(9x-7)=0

We multiply parentheses ..

(+81x^2-63x-63x+49)=0

We get rid of parentheses

81x^2-63x-63x+49=0

We add all the numbers together, and all the variables

81x^2-126x+49=0

a = 81; b = -126; c = +49;
Δ = b2-4ac
Δ = -1262-4·81·49
Δ = 0
Delta is equal to zero, so there is only one solution to the equation

                              Stosujemy wzór:
$x=\frac{-b}{2a}=\frac{126}{162}=7/9$

See similar equations:

| x/x2+8x+15=0 | | 7(w+2)=9w+22 | | 6(4-1)/5=-z | | 78=x+.08x | | -9+3=-6(v+4) | | 3+8x=3(2x+1) | | -4(w+8)=2w+10 | | 10(t-98)=-50 | | 35x^2-115x+30=0 | | 3/7v-3/2=-7/3 | | 2u+16=4u | | -20=2(v-6)-6v | | 4(x-2)+6x-9=5(x-1)-3(x+2)+10 | | u/4-7=1 | | -6x+24=9x-36 | | 10x-4x=11 | | 6x+15=6x+18 | | 98x^2-14x+1=0 | | 1.6x-(x-2.8)=(.2x+1.5)-0.7 | | 3z−z+6z−7z=47 | | 5x-6x=4-3+4 | | 2.25x=5+13.5x+14 | | n+6.2n=180 | | 180=6.2x+x | | x2-11x+3=5 | | x/6=x/4-(1) | | 12+u=5u | | 2(x-3)-3x=5 | | 1.6x-(x-2.8)=(.2+1.5)-0.7 | | x=3.2^4 | | 3x^=39x | | 4k-1=9 |

Equations solver categories