If it's not what You are looking for type in the equation solver your own equation and let us solve it.
21x^2-10+x=0
a = 21; b = 1; c = -10;
Δ = b2-4ac
Δ = 12-4·21·(-10)
Δ = 841
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}$$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$$\sqrt{\Delta}=\sqrt{841}=29$$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(1)-29}{2*21}=\frac{-30}{42} =-5/7 $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(1)+29}{2*21}=\frac{28}{42} =2/3 $
| 1.3=4y+20.1 | | 2+x/2=28 | | x=3.5+24 | | 4u+28=7(u+1) | | -7x+4=-104+5 | | x=(0.2587/0.0143) | | (3^x+4)=(2^5-3x) | | -x+3x=0 | | -2x-87=8x+73 | | -4(y-8)=-6y+14 | | 5(2^x)=5/16 | | 10x=5×(3x+6) | | 10x=5×(3+x) | | -5x=-75- | | 3x=10,1+9,9-2x | | 9x/2=4x+10 | | 16y-8y=32 | | y=6=-5 | | 8,5-3z=-8z | | 2x+6=89 | | 13^(x+7)=18^(5x) | | 3. –3x+4=–1 | | –3x+4=–1 | | -6p^2-2p+3=0 | | 6p^2-2p+3=0 | | 9v/11=2/3 | | 4(b+6)=34 | | 2(4+2(2+3)+2)3+4)=x | | 4x=7.5 | | 4x(x+7)+9=23 | | 2n+5=2 | | 4(6+b)=34 |