If it's not what You are looking for type in the equation solver your own equation and let us solve it.
9x^2=56
We move all terms to the left:
9x^2-(56)=0
a = 9; b = 0; c = -56;
Δ = b2-4ac
Δ = 02-4·9·(-56)
Δ = 2016
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}$$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$
The end solution:
$\sqrt{\Delta}=\sqrt{2016}=\sqrt{144*14}=\sqrt{144}*\sqrt{14}=12\sqrt{14}$$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(0)-12\sqrt{14}}{2*9}=\frac{0-12\sqrt{14}}{18} =-\frac{12\sqrt{14}}{18} =-\frac{2\sqrt{14}}{3} $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(0)+12\sqrt{14}}{2*9}=\frac{0+12\sqrt{14}}{18} =\frac{12\sqrt{14}}{18} =\frac{2\sqrt{14}}{3} $
| 5x+7x+8x=40 | | (4x-4)^2+2(4x-4)-63=0 | | x2-30x-400=0 | | -5(2t-4)+3t=5t-9 | | 2x+6+x-45=180 | | 3b/10=4-b/2 | | x5−x=0. | | 9(4x+5)+4(2x-5=157 | | x+1/x+1-x-1/x+1=5/6 | | 50-x+4x=180 | | 4u+2u+u+1=15 | | 4 · y = 2/5 | | 10+4(6x+3)=166 | | -7u+4(u+6)=36 | | 23−5y=23+5y | | (7/x)+(3/2x)=10 | | 4x+50-x=180 | | d÷5/6=3/4 | | -17=-t | | 5p^2-10p+7=0 | | d÷ 5/6=3/4 | | 8(4x+5)-12x=169 | | 14-(11x-3)=28 | | 7-x/2=26/3+x/3 | | 16-2r=3-r+6r+1 | | 4(u+7)=7u+19 | | 12b2-8b=0 | | 1/2t+35=-5 | | 4^(5-x)=7^(x) | | 5(y+7)=7y+29 | | 4y-10=6(y-4) | | 7(5x+2)=189 |