(X+7)(2x+5)=0

Simple and best practice solution for (X+7)(2x+5)=0 equation. Check how easy it is, and learn it for the future. Our solution is simple, and easy to understand, so don`t hesitate to use it as a solution of your homework.

If it's not what You are looking for type in the equation solver your own equation and let us solve it.

Solution for (X+7)(2x+5)=0 equation:



(X+7)(2X+5)=0
We multiply parentheses ..
(+2X^2+5X+14X+35)=0
We get rid of parentheses
2X^2+5X+14X+35=0
We add all the numbers together, and all the variables
2X^2+19X+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:
$X_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$X_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{81}=9$
$X_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(19)-9}{2*2}=\frac{-28}{4} =-7 $
$X_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(19)+9}{2*2}=\frac{-10}{4} =-2+1/2 $

See similar equations:

| (2/x)+7x=-12 | | 12x+3/2=9 | | 4+19x-5x^2=0 | | x2+4x=7 | | (X+5)(2x+7)=0 | | |4x-6|=|10x+2| | | 5x^2-3x-18=0 | | 0=-16t*t+9t+125 | | -5/8z+2/3=19/24 | | 9+2(5w-3)=-3(2w-5)+7w | | 0.06(3y-4)=0.5(y+4) | | 1/7(x+7)=6 | | X+(x+2)=218 | | 6=d+8/5 | | 2x-3x+3=28 | | 1x^2+2x=-1 | | 3x^2+17x-2=0 | | 3(x+7)-4=5 | | T=-2n+5 | | 1/2t+8=3 | | 3-0.3x^2-16x+500=0 | | -0.6x=16 | | X-0.25x=341.25 | | X^2-20x-1200=0 | | 3x-1=4x+8x | | 4y-3+3(2y+3)=-2(y+4) | | 3/7x-15/7x+2=6-4x | | 8+6+7a=0 | | (9x-11)-(x+3)=7x-10 | | 3/7(x−5)+2=2(3−2x) | | 3(x-5)+8=5 | | 4x+10=8-5x |

Equations solver categories