If it's not what You are looking for type in the equation solver your own equation and let us solve it.
9r^2-25=0
a = 9; b = 0; c = -25;
Δ = b2-4ac
Δ = 02-4·9·(-25)
Δ = 900
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:$r_{1}=\frac{-b-\sqrt{\Delta}}{2a}$$r_{2}=\frac{-b+\sqrt{\Delta}}{2a}$$\sqrt{\Delta}=\sqrt{900}=30$$r_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(0)-30}{2*9}=\frac{-30}{18} =-1+2/3 $$r_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(0)+30}{2*9}=\frac{30}{18} =1+2/3 $
| 3x-3+18=180 | | 5.3+2y=20 | | -10p+6=206 | | 112-96t-16t^2=0 | | 8=0.005x. | | 8k+3=18 | | -21+b=-37 | | 10-4z=20-2z-1 | | 0.92x=4000 | | 9/x-9+x/x+9=10x^2/x^2-81 | | 1/2=(3x-1)+(8x+3)=23 | | F6=7x-15 | | 8x+5=9x-8 | | 8z+12=5z-21. | | 2z=1.5-z | | 2x^2/x+3=4.9 | | 2(n+3)=9 | | 12x-10=9x+8 | | 7a-5=6a-17 | | x+5/3=2x+1/10 | | 0,5x^2-3x+4=0 | | 220=y3 | | 3x-4+2x=11 | | 3x-40=x+20+x | | -43=-13+x/3 | | 45x-2=33x+7 | | 4x+3=-4x-2.66 | | X-3+2-2x=3 | | (1/2x)-(3x+9/2x^2)=(2x+6/x^2) | | 3n+25=34 | | 3n+25=35 | | 3w–19=7+5w |