Consider the equation
, it can be expressed as
.
Now, we have to write the equivalent equation.
Since, Equivalent equations are those equations which have exactly same solution. We can say that the two equations are equivalent if solution of one equation is the solution of other equation.
So, consider the equation 
Equivalent equation can be obtained by multiplying the given equation by any number say '2'.
Multiplying both sides of the given equation by '2'.



is the required equivalent equation.
Answer: For a) the Factor is (x+2) (x+1)
Step-by-step explanation: Because (x+2) multiplied by (x+1) gives you x2 + 3x +2.
I don't know your language so I don't know if that was the question or what the other questions were asking, but that's the best I can do
A situation could be for example if you wanted to buy a large amount of {something} and you had $135. To find out how many you would be able to buy, you would solve the equation.

So 9 would be the amount of {something} that you could buy.
Answer:
A F(x) it is the power function, make sure to take notes as well
Answer:
10
Step-by-step explanation:
40=2 x 2 x 2 x 5
50=2 x 5 x 5
therefore, GFC = 2x5
GFC= 10