Explanation:
Kadisha's method works because 15% is 3 times 5%, and both amounts are computed on the amount of the bill before tax is added.
PEMDAS.....parenthesis, exponents, multiplication/division, addition/subtraction
so step 2 is solving the exponents <==
Answer:
x^2 + 3x - 18
Step-by-step explanation:
In order to solve this problem, I recommend using the FOIL method.
F = Front
O = Outer
I = Inner
L = Last
Start by multiplying the fronts which is x with x, which will give you x^2 (X to the second power).
Then, multiply x and -3, which gives you -3x. (Outer)
Third, multiply 6 and x, which gives you 6x. (Inner)
Finally, multiply 6 and -3, which gives you -18. (Last)
Now, there are like terms in the products that we just did which is 6x and -3x combine them together and you will get 3x.
So your results should be
x^2 + 3x - 18
Hope this helps!
