First you need to expand them
(x^2 + 9) + (2x + 6)
then you add them together
x^2 + 2x + 15
now you can factorise it
i hope this helped you
14+2x=4x: divide 2x on each side
14=2x: divide by 2
7=x
7
Hello!
Let's use 'x' to represent the cost of the burger, and 'y' to represent the cost of the hotdog.
2x + y = 482
× + 2y = 370
2x + 47 = 740
-3y = -258
y = 86 cents
2x + 86 = 482
2x = 396
x = 198
A burger costs $1.98 and a hot dog costs $.86
I hope this didn't confuse you, I'm not very good at explaining!
