If it's not what You are looking for type in the equation solver your own equation and let us solve it.
3+2x(4x-5)=9
We move all terms to the left:
3+2x(4x-5)-(9)=0
We add all the numbers together, and all the variables
2x(4x-5)-6=0
We multiply parentheses
8x^2-10x-6=0
a = 8; b = -10; c = -6;
Δ = b2-4ac
Δ = -102-4·8·(-6)
Δ = 292
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}$$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$
The end solution:
$\sqrt{\Delta}=\sqrt{292}=\sqrt{4*73}=\sqrt{4}*\sqrt{73}=2\sqrt{73}$$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-10)-2\sqrt{73}}{2*8}=\frac{10-2\sqrt{73}}{16} $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-10)+2\sqrt{73}}{2*8}=\frac{10+2\sqrt{73}}{16} $
| 1/2(2x+2)-5x=-15 | | 2.2=2h | | 8/4}x+8=4x+8 | | 3x^2-8x+11=4(x-1) | | 6x+3x=2x+3 | | b4=16= | | 17-9x=189 | | C^2+27c=-5 | | m+-9.59=-5.59 | | 80w=480 | | n=5(n+3)=38 | | 15s=-840 | | 4(v-5)=-7v | | 25=7x+4-4 | | 11w+17w=-20 | | b+5/3=7 | | X-11y=96 | | -2(2z+1)=6 | | -16w=-752 | | 286=-13n | | 3(3n+5)=87 | | -5x-5(x+1)=-3(3x+5) | | 3x-8=5+6x | | 13(y-3)=3(4y+2)-45 | | M=(4x+9) | | m+227=284 | | 3(x-4)=2(x+1)-5 | | 10x-25x-8=7x-12 | | 15=q/18 | | -5u+6=31 | | 7.2-y=8 | | q+-93=-53 |