Answer:

Step-by-step explanation:
<u>Formula:</u> 




Answer:
Is the question even complete ?
Step-by-step explanation:
Answer:
9x^2 - 49y^2
Step-by-step explanation:
Gchdbncxthysshj teethed how
Answer:
(i). Ahsan's Present Age = 16
(ii). Age of Ahsan's Mother when ahsan is 21 years old = 50
Step-by-step explanation:
Let's say, x represents the age of ahsan.
y represents the age of his mother.
The system of equation from the date given is:

Solve them will get us:

Regards: Umer