If it's not what You are looking for type in the equation solver your own equation and let us solve it.
(7+u)(2u+5)=0
We add all the numbers together, and all the variables
(u+7)(2u+5)=0
We multiply parentheses ..
(+2u^2+5u+14u+35)=0
We get rid of parentheses
2u^2+5u+14u+35=0
We add all the numbers together, and all the variables
2u^2+19u+35=0
a = 2; b = 19; c = +35;
Δ = b2-4ac
Δ = 192-4·2·35
Δ = 81
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:$u_{1}=\frac{-b-\sqrt{\Delta}}{2a}$$u_{2}=\frac{-b+\sqrt{\Delta}}{2a}$$\sqrt{\Delta}=\sqrt{81}=9$$u_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(19)-9}{2*2}=\frac{-28}{4} =-7 $$u_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(19)+9}{2*2}=\frac{-10}{4} =-2+1/2 $
| 3x^2+4x−3=0 | | a^2+(a−9)^2=45 | | x^2+1/2=65/5 | | a2+(a−9)2=45 | | 17b+4=-4/1/2 | | X^3+10x+11=0 | | 3+4s=s | | 3p-12=-5p+28 | | 7x-5=13x+17 | | 7c+21=0 | | y=3(19+y)-1 | | (3x+36)+(9x+28)=90 | | (3x+10)=(5x=18) | | x^2+(1.5x)^2=7.5 | | 8/15k=1/6 | | 0.5x-3×+5=0 | | 8x–8=48, | | 3h+h+h/2=612 | | 6x=30000 | | 2-(x+1/2)=1/2 | | x/2(x-5)=5x+23 | | 8+3x=−12−7x | | y/4−6=4y= | | 7000x=49000 | | 2(x-14)+x-14=180 | | 0.4z=-32 | | 10x-2=3x+6 | | 3/y=-32 | | 4x=10×2x | | 6y+2y=1 | | -3=22.5x-4.9x^2 | | 5-(x+2)=3-x |