If it's not what You are looking for type in the equation solver your own equation and let us solve it.
(7n)^2+30n-25=0
a = 7; b = 30; c = -25;
Δ = b2-4ac
Δ = 302-4·7·(-25)
Δ = 1600
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:$n_{1}=\frac{-b-\sqrt{\Delta}}{2a}$$n_{2}=\frac{-b+\sqrt{\Delta}}{2a}$$\sqrt{\Delta}=\sqrt{1600}=40$$n_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(30)-40}{2*7}=\frac{-70}{14} =-5 $$n_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(30)+40}{2*7}=\frac{10}{14} =5/7 $
| -8=t/6+1 | | 4x=-6/21 | | -1-(1+4x)=-3-(3x-2) | | z/5=73/4 | | -7/4v-3=3/4v-4/3 | | 11x-2(x-3)=9(x+1)+7 | | 50h=19-45h | | -8=-6/t+1 | | 2x2-11+9=0 | | 4z-11=z+7 | | -1/3=-2/5x-3/4 | | 2(x-6)=7x-17 | | -8(3-x)=2(8x+4) | | |-9x|-9=18 | | 0.5r=-2 | | 4x-2x+16=11-8x+x-49 | | (3x27)=(x+9) | | 5x-2x+3=x-9+12 | | 2/4(x-2)=-3 | | 3x+4(-5+3x)=1-x | | 1/2p=12 | | 2(X+1)+1=5X-3(-2+x) | | 6y+3-6y=5 | | 5(3c-1)-1=13c+6 | | -5a/2=74 | | X+6-2x=-2 | | 5(x-1)=-5(2x+1) | | 1/6(4(x-1)+8)=x | | -23+4x=-2+3(x-6) | | 7+1/4(12-4s)+2s=4 | | 5(3n+5)=6(7n+2)+1 | | 7×9=(7×10)-(7×y) |