If it's not what You are looking for type in the equation solver your own equation and let us solve it.
(18+2x)(26+2x)=1428
We move all terms to the left:
(18+2x)(26+2x)-(1428)=0
We add all the numbers together, and all the variables
(2x+18)(2x+26)-1428=0
We multiply parentheses ..
(+4x^2+52x+36x+468)-1428=0
We get rid of parentheses
4x^2+52x+36x+468-1428=0
We add all the numbers together, and all the variables
4x^2+88x-960=0
a = 4; b = 88; c = -960;
Δ = b2-4ac
Δ = 882-4·4·(-960)
Δ = 23104
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{23104}=152$$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(88)-152}{2*4}=\frac{-240}{8} =-30 $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(88)+152}{2*4}=\frac{64}{8} =8 $
| -12-5x=-(1+7x)+6x | | 12=4(r-3) | | 3(x)+2=5-9(x) | | 13=1+2b-4b | | 3x+4+2x-9=45 | | -3(-4-x)=-x-2(-x+7) | | 11a-(2a-1)=118 | | 5(3x-12)-12=6 | | 4v-2/8=2/3 | | -4=-17+x/3 | | x+11x=108 | | 5x+8−x=20+4x−12 | | 7p+4+5p+2=90 | | 4•a=34 | | n+(-4)=6 | | 8(j+5)=12j | | 17=z+15223 | | 8(p-5)+(p-8)=5p-2p | | 8(p-5)+(p-8)=p-2p | | -p-3=0.5*p+2 | | 5+0.50x=3+1x | | (-12)-k=27 | | 5x+8-3x=14 | | 4+2x=2+1x | | (-2)+n=-13 | | 5+1.50x=3+.75x | | 5+0.75x=3+0.25x | | 16-n=-29 | | 5+0.50x=3+0.25x | | -2-3(-6+5x)=121 | | 4m=16m | | 6.3x2.1=13.23 |