How the quadratic formula works:
For any quadratic equation ax² + bx + c = 0, the solution is

.
In the case of our equation 7x² - x = 7, first we need to subtract 7 from each side so that we have 0 on the right.
7x² - x - 7 = 0
Identify the values of a, b, and c.
a = 7, b = -1, and c = -7.
Plug these into our quadratic formula and solve.

There are two values for x: (1+√197)/14 and (1-√197)/14.
The approximate values for these are 1.073976 and -0.931119.
The answer you are looking for is c)7
Answer:
(-4,-4)
Step-by-step explanation:
Answer:
B
Step-by-step explanation:
because you would double the amout of oj so 4+4=8 then also use 10 liters of soda