If it's not what You are looking for type in the equation solver your own equation and let us solve it.
Simplifying
(16k2 + -81) = 0
Reorder the terms:
(-81 + 16k2) = 0
Remove parenthesis around (-81 + 16k2)
-81 + 16k2 = 0
Solving
-81 + 16k2 = 0
Solving for variable 'k'.
Move all terms containing k to the left, all other terms to the right.
Add '81' to each side of the equation.
-81 + 81 + 16k2 = 0 + 81
Combine like terms: -81 + 81 = 0
0 + 16k2 = 0 + 81
16k2 = 0 + 81
Combine like terms: 0 + 81 = 81
16k2 = 81
Divide each side by '16'.
k2 = 5.0625
Simplifying
k2 = 5.0625
Take the square root of each side:
k = {-2.25, 2.25}
| 7x^3-42x^2+56x=0 | | 4(3x+5)=16 | | 2x+5+39=90 | | у=1/2χ;χ=-18 | | 4-3(2x-3)=37 | | 63.2+2.79= | | Y=-6+4(-2) | | [2n+7]+16=9 | | ?/24=5/8 | | 5xsquare+45=0 | | 2x^2-2x+1.3=0 | | y+9=-1(x-8) | | cos(5x)+5cos(2x)=0 | | f(-5)=2x^2+3x-5 | | (5/m)=(8/2m-6) | | (3+4i)(5-7i)=0 | | 30x+40(15-x)=520 | | 66=3v | | -9x-70=140+x | | 19/3= | | 5-24= | | (-6x+2)(-5x+5)=0 | | Y-24=-0.6(x-6) | | 3x-130=10x+52 | | Y^2-17y+6=0 | | 4(x)2=576 | | 2(2t^3-18t^2+48t-40)=0 | | R(X)=270X-90X^2 | | w^4u^7/w^5u | | 2v-17=15 | | t^4-12t^3+48t^2-80t+48=0 | | 36=5w-9 |