Answer:
what is it asking you? don't just show the problem tell us what needs to be done.
I got you fam
2(x - 4) - 4x = 0
2x - 8 - 4x = 0
-2x - 8 = 0
-2x -8 + 8 = 0 + 8 (add 8 both sides)
(divide both sides by -2)
x = -4
Hope this helps
Okay so in a gallon there are 16 cups, in this case 100 cups is equivalent to 6.25 gallons. 6.25 times 3.12= 19.5
Therefore $19.5 is how much the gas cost!
Answer:
Completing the square we get: ![(x-2)^2-(2)^2](https://tex.z-dn.net/?f=%28x-2%29%5E2-%282%29%5E2)
and factoring the term we get: ![x(x-4)](https://tex.z-dn.net/?f=x%28x-4%29)
Step-by-step explanation:
We need to complete the square for the expression ![x^2-4x](https://tex.z-dn.net/?f=x%5E2-4x)
For completing the square the expression would be of form ![a^2+2ab+b^2=(a+b)^2](https://tex.z-dn.net/?f=a%5E2%2B2ab%2Bb%5E2%3D%28a%2Bb%29%5E2)
For given expression we have to add (2)^2 and subtract to make it complete the square.
![x^2-2(x)(2)+(2)^2-(2)^2\\(x-2)^2-(2)^2](https://tex.z-dn.net/?f=x%5E2-2%28x%29%282%29%2B%282%29%5E2-%282%29%5E2%5C%5C%28x-2%29%5E2-%282%29%5E2)
Now, we have to factor the polynomial using formula ![(a)^2-(b)^2=(a-b)(a+b)](https://tex.z-dn.net/?f=%28a%29%5E2-%28b%29%5E2%3D%28a-b%29%28a%2Bb%29)
So, ![(x-2)^2-(2)^2\\=(x-2-2)(x-2+2)\\=(x-4)(x-0)\\=x(x-4)](https://tex.z-dn.net/?f=%28x-2%29%5E2-%282%29%5E2%5C%5C%3D%28x-2-2%29%28x-2%2B2%29%5C%5C%3D%28x-4%29%28x-0%29%5C%5C%3Dx%28x-4%29)
Completing the square we get: ![(x-2)^2-(2)^2](https://tex.z-dn.net/?f=%28x-2%29%5E2-%282%29%5E2)
and factoring the term we get: ![x(x-4)](https://tex.z-dn.net/?f=x%28x-4%29)
Hey sorry I don’t know it but you can use cymath.com on the internet and it’ll help you a lot with stuff like these!