Multiply the numbers (2*2=4)
![=\frac{-7+\sqrt{7^2-4\cdot \:2\left(-5\right)}}{2\cdot \:2}](https://tex.z-dn.net/?f=%3D%5Cfrac%7B-7%2B%5Csqrt%7B7%5E2-4%5Ccdot%20%5C%3A2%5Cleft%28-5%5Cright%29%7D%7D%7B2%5Ccdot%20%5C%3A2%7D)
Apply the rule
![\sqrt{7^2+2\cdot \:4\cdot \:5}](https://tex.z-dn.net/?f=%5Csqrt%7B7%5E2%2B2%5Ccdot%20%5C%3A4%5Ccdot%20%5C%3A5%7D)
7^2 =49
![=\sqrt{49+2\cdot \:4\cdot \:5}](https://tex.z-dn.net/?f=%3D%5Csqrt%7B49%2B2%5Ccdot%20%5C%3A4%5Ccdot%20%5C%3A5%7D)
Multiply
![\sqrt{49+40}](https://tex.z-dn.net/?f=%5Csqrt%7B49%2B40%7D)
Add
![\sqrt{89}](https://tex.z-dn.net/?f=%5Csqrt%7B89%7D)
![=\frac{-7-\sqrt{89}}{4}](https://tex.z-dn.net/?f=%3D%5Cfrac%7B-7-%5Csqrt%7B89%7D%7D%7B4%7D)
Final solution:
Answer:
![X \geq \frac{13}{9}](https://tex.z-dn.net/?f=X%20%5Cgeq%20%20%5Cfrac%7B13%7D%7B9%7D)
Step-by-step explanation:
Isolate the variable by dividing each side by factors that don't contain the variable.
First get rid of the last set of () by doing distributive property with the - sign
x^2 + 2x -1 - x^2 + 2x -1
=4x - 2
Answer:
here are the definitions of each..
Step-by-step explanation:
Commence: begin; start
Devise: plan or invent (a complex procedure, system, or mechanism) by careful thought.
Originated: create or initiate (something).
Discover:find (something or someone) unexpectedly or in the course of a search.
so it cant be A of D so it would have to be B of C but i think the best answer is C
Answer:
set A and Set D
Step-by-step explanation:
(-3,0) is the point where x=-3 and y=0
you can see that line A passes through point (-3,0) and line D passes through the same point. so your answer is A and D