Answer:
I am pretty sure you can't because they need to be like terms ( I may be wrong this is just a guess)
Step-by-step explanation:
You can use sum-product but the easiest way is to isolate x like this:
x^2 + 9x (-9x) = 0 (-9x)
x^2 = -9x
x^2 (/x) = -9x(/x)
x=-9
Answer:
The nike store offers the best deal
The saving per shirt is $2.50
Step-by-step explanation:
Here, we want to compare the prices offered in the two stores
In footlocker, you can get 3 shirts for $55.50
The sales per shirt is thus;
55.5/3 = $18.50
For Nike,
5 shirts for $79.99 which is almost $80
So the price per shirt is $80/5 = $16
We can see that the price at the nike store is better
The difference leading to the savings is;
18.5-16 = $2.50
So you save $2.50 buying from the nike store