If it's not what You are looking for type in the equation solver your own equation and let us solve it.
(16x+5)(9x-25)=180
We move all terms to the left:
(16x+5)(9x-25)-(180)=0
We multiply parentheses ..
(+144x^2-400x+45x-125)-180=0
We get rid of parentheses
144x^2-400x+45x-125-180=0
We add all the numbers together, and all the variables
144x^2-355x-305=0
a = 144; b = -355; c = -305;
Δ = b2-4ac
Δ = -3552-4·144·(-305)
Δ = 301705
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}$$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-355)-\sqrt{301705}}{2*144}=\frac{355-\sqrt{301705}}{288} $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-355)+\sqrt{301705}}{2*144}=\frac{355+\sqrt{301705}}{288} $
| (x+12)+(x)+90=180 | | 2d−11=72d−11=72d−11=72d−11=72d−11=72d−11=7 | | 2/6x-4=-2 | | 2d−11=7 | | 100=-2x+6 | | 20x^²=8x | | 3(3-5x)=2(2x+1) | | 15d−17d−-15d+-6d=14 | | 2x+2(x+1)=3(x+1) | | -11d=14 | | 4x-6=2x-34 | | -90x-0.7=-100x+1.1 | | 2w2=4w-48=0 | | 3(x+1)-2=x+3 | | (8x+5)=(7x-12) | | (16x+5)=(9x-25)=180 | | 7^y=24 | | 1=16-3n | | (5x-10)=(7x-16) | | 3(x-3)=2(x-11) | | 8/7-(5x-2)=1/4x-12 | | -11w+6=38 | | 2x/3+6=100 | | 7(x-4)=1-(x+9) | | (10x+17)=(12x+7)=180 | | 8+2d=16 | | 4.6x+9=21.16+3x | | 1/3x=2x=45 | | 4738903-748337291+19139384d=100101010101-9999999d(10101010) | | 2w=4w-48=0 | | y/9+4=5 | | 5x+52=9x-16=180 |