If it's not what You are looking for type in the equation solver your own equation and let us solve it.
(9x+4)(16x-4)=90
We move all terms to the left:
(9x+4)(16x-4)-(90)=0
We multiply parentheses ..
(+144x^2-36x+64x-16)-90=0
We get rid of parentheses
144x^2-36x+64x-16-90=0
We add all the numbers together, and all the variables
144x^2+28x-106=0
a = 144; b = 28; c = -106;
Δ = b2-4ac
Δ = 282-4·144·(-106)
Δ = 61840
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}$$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$
The end solution:
$\sqrt{\Delta}=\sqrt{61840}=\sqrt{16*3865}=\sqrt{16}*\sqrt{3865}=4\sqrt{3865}$$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(28)-4\sqrt{3865}}{2*144}=\frac{-28-4\sqrt{3865}}{288} $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(28)+4\sqrt{3865}}{2*144}=\frac{-28+4\sqrt{3865}}{288} $
| y=-8-3(3)^2 | | Y=6x^2-48x | | -6-6+8x=-5+2x-1 | | X+y+20=180 | | (9x+4)(16x-4)=180 | | y=-8-3(9) | | -9h-15=93 | | 4=-1+1–x+8 | | 11( | | 6+3x-2x=3 | | 45+3m=-60 | | 36/48=x/6 | | 2(y+7)+y=8 | | 2x+1+2x=-15 | | 4x+2+3x+7=51 | | (9x+4)(16x-4)+80=180 | | 4(x-6)-2x=3x+7 | | 2y+10=80 | | 4=0,25(w+4,3) | | (9,7)/m=0.2 | | 2s-4=36 | | 3n-37=5 | | -3/8=x/4 | | 49=3x+7 | | −4.5=m+1.9. | | 2c+(12-c)=20 | | X+43=-18+x | | 4.x+3=12 | | 9y+y-4y=24 | | 5(4+r)=-2r-8 | | -4=u+3/2 | | (5m+4)²=0 |