5x and 6x are like terms because they are both followed by an x. 20 and -13 are also like terms. For they have nothing behind them. Hope this helps!
Step-by-step explanation:
9x2= 3 • 3 • x2
6x= 3 • 2 • x
12x= 2 • 2 • 3 • x
8= 2 • 2 • 2
Step-by-step explanation:
Using distance formula,
Let the distance between point E and F = ef,

Step-by-step explanation:
2-5^3+6x
2-125+6x
6x+2-125
6x-123
The answer will be $20,000.