You bring all xs on one side then you solve as quadratic analysis.
![x + 8 + {x}^{2} - 4x - 12 = 0](https://tex.z-dn.net/?f=x%20%2B%208%20%2B%20%20%7Bx%7D%5E%7B2%7D%20%20-%204x%20-%2012%20%3D%200)
![{x}^{2} - 3x - 4 = 0](https://tex.z-dn.net/?f=%20%20%7Bx%7D%5E%7B2%7D%20-%203x%20-%204%20%3D%200)
so you can simplify into
![(x + 1)(x - 4) = 0](https://tex.z-dn.net/?f=%28x%20%2B%201%29%28x%20-%204%29%20%3D%200)
*Note that here 4 took the negative sign and 1 took the positive sign, as you want to numbers that if multiplied will give -4 and when added will give -3, and these are (-4 and 1)*
so now you can simply say that, for the equation to equal 0, x should be -1 or 4.
You can always substitute to make sure of your calculations.
Hope this helps.
Answer:
B. 7 inches
Step-by-step explanation:
The surface area of a cube is denoted by: A = 6s², where s is the side length.
Here, we know that A = 294 in², so plug this into the equation to solve for s:
A = 6s²
294 = 6s²
s² = 49
s = √49 = 7
The answer is thus B, 7 inches.
I think the answer is c) 4,1 .
it needs to be shifted to the positive side of the graph by 4 units so right by 4 units is the correct answer