Question

Attached is the question. Thank you.

Answer 1

Answer:

Step-by-step explanation:

4(a²-b²)=207

(a²-b²)=207/4

(a²-b²)=(a+b)(a-b)

a+b=4.5, a-b=?

=> (207/4) = 4.5*(a-b)

51.75=4.5*(a-b)

51.75/4.5=(a-b)

a-b=11.5

lets check it here

(a+b)(a-b)

=4.5*11.5

=51.75