The 82nd term for the sequence would be -4
Answer:
The solution of the given quadratic equation is 1 and (-10).
Step-by-step explanation:
![2x^2+18x=20](https://tex.z-dn.net/?f=2x%5E2%2B18x%3D20)
![x^2+9x=\frac{20}{2}](https://tex.z-dn.net/?f=x%5E2%2B9x%3D%5Cfrac%7B20%7D%7B2%7D)
![x^2+9x-10=0](https://tex.z-dn.net/?f=x%5E2%2B9x-10%3D0)
![ax^2+bx+c=0](https://tex.z-dn.net/?f=ax%5E2%2Bbx%2Bc%3D0)
Solving equation by quadratic formula:
Here , a = 1,b = 9, c = (-10)
![D=b^2-4ac=(9)^2-4(1)(-10)=121](https://tex.z-dn.net/?f=D%3Db%5E2-4ac%3D%289%29%5E2-4%281%29%28-10%29%3D121)
![x=\frac{-b+{\sqrt{D}}}{2a}=\frac{(-9)+\sqrt{121}}{2(1)}=1](https://tex.z-dn.net/?f=x%3D%5Cfrac%7B-b%2B%7B%5Csqrt%7BD%7D%7D%7D%7B2a%7D%3D%5Cfrac%7B%28-9%29%2B%5Csqrt%7B121%7D%7D%7B2%281%29%7D%3D1)
![x=\frac{-b-{\sqrt{D}}}{2a}=\frac{(-9)-\sqrt{121}}{2(1)}=(-10)](https://tex.z-dn.net/?f=x%3D%5Cfrac%7B-b-%7B%5Csqrt%7BD%7D%7D%7D%7B2a%7D%3D%5Cfrac%7B%28-9%29-%5Csqrt%7B121%7D%7D%7B2%281%29%7D%3D%28-10%29)
The solution of the given quadratic equation is 1 and (-10).
The 3 option
(3,9), (-7,1), (6,12), (-3, -9)
It is B
(x+1<1)this mark(x+1>1)
Answer:
4 11/40 hope this helps :)
Step-by-step explanation: