I promise I will mark the brainiest

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Step-by-step explanation:

a^2 - b^2 = 9

(a + b)(a - b) = 9

a + b = .

ab = 3

a = 3/b

3/b + b =

3 + b^2 =

3 + b^2 =

3 + b^2 =

3 + b^2 =

(b^2 + 3)(-b^2 + 3) = 9b^2

-b^4 + 9 = 9b^2

b^4 + 9b^2 - 9 = 0

Let's say that b^2 = x

x^2 + 9x - 9 = 0

Hope this [somewhat] helps!

Step-by-step explanation:

a²-b²=9

ab=3 then a=3/b

a²-b²=9

(a+b)(a-b)=9 ( the values has to b (3*3) or (9*1)

but since ab=3. so the value has to be (3*3)

(a+b)(a-b)=9

3*3=9

a+b=3

ab=3