Answer:
x^2 -2x = 4x+1
2x^2 +12x = 0
9x^2 +6x -3=0
Step-by-step explanation:
A quadratic equation has the highest power of x being squared
x^2 -2x = 4x+1
2x^2 +12x = 0
9x^2 +6x -3=0
These are all quadratic equations
His sister is 7.895 feet tall.
Answer:
x = 5
Step-by-step explanation:
18x-30-7x = 25
11x = 55
x = 55/11
x=5
Answer:

Step-by-step explanation:
There are a couple of equivalent expressions to the function
. For example:

Factor:

If you add the terms inside the parentheses:

Basically you can add the like terms from the start and get the same result.

Therefore:

Answer:
(3, 6.2)
Step-by-step explanation:
just did this question :)