Answer:
B: (4,-1)
Step-by-step explanation:
2y^2 - 6y - 8
x= 6 +- sqrt of 36 - 4(2)(-8) all divided by 4
Start with
![-2x-4 < 3x+21](https://tex.z-dn.net/?f=%20-2x-4%20%3C%203x%2B21%20)
Add 2x to both sides:
![-4 < 5x+21](https://tex.z-dn.net/?f=%20-4%20%3C%205x%2B21%20)
Subtract 21 from both sides:
![-25 < 5x](https://tex.z-dn.net/?f=%20-25%20%3C%205x%20)
Divide both sides by 5. Since it is positive, we don't have to change the inequality sign:
![-5 < x](https://tex.z-dn.net/?f=%20-5%20%3C%20x%20)
So, the answer is ![x > -5](https://tex.z-dn.net/?f=%20x%20%3E%20-5%20)
This is the answer I think it would be helpful if u used Desmos that wat we use in math class
Answer:
- 1/4
Step-by-step explanation:
![\frac{1-\sqrt{x} }{x^{2}-1 } = \frac{(1-\sqrt{x})*(1+\sqrt{x} ) }{(x+1)(x-1)(1+\sqrt{x} )} \\= \frac{1-x}{-(1-x)(x+1)(1+\sqrt{x} )} \\= - \frac{1}{(x+1)(1+\sqrt{x} )} \\ \lim_{->1} - \frac{1}{(x+1)(1+\sqrt{x} )} \\ = -\frac{1}{(1+1)(1+\sqrt{1}) } = - 1/4](https://tex.z-dn.net/?f=%5Cfrac%7B1-%5Csqrt%7Bx%7D%20%7D%7Bx%5E%7B2%7D-1%20%7D%20%3D%20%5Cfrac%7B%281-%5Csqrt%7Bx%7D%29%2A%281%2B%5Csqrt%7Bx%7D%20%29%20%7D%7B%28x%2B1%29%28x-1%29%281%2B%5Csqrt%7Bx%7D%20%29%7D%20%5C%5C%3D%20%5Cfrac%7B1-x%7D%7B-%281-x%29%28x%2B1%29%281%2B%5Csqrt%7Bx%7D%20%29%7D%20%5C%5C%3D%20-%20%5Cfrac%7B1%7D%7B%28x%2B1%29%281%2B%5Csqrt%7Bx%7D%20%29%7D%20%5C%5C%20%5Clim_%7B-%3E1%7D%20%20%20-%20%5Cfrac%7B1%7D%7B%28x%2B1%29%281%2B%5Csqrt%7Bx%7D%20%29%7D%20%5C%5C%20%3D%20-%5Cfrac%7B1%7D%7B%281%2B1%29%281%2B%5Csqrt%7B1%7D%29%20%7D%20%3D%20-%201%2F4)
Answer:
is there a picture?
Step-by-step explanation: