Question

What is the value of: (15)²-(12)²

Answer 1

$(15)^{2}$

= 225

$(12)^{2}$

= 144

= 225 - 144

=81

also can be written as -

$(9)^{2}$

Answer 2

Answer:

I know the answer

Step-by-step explanation

a^2 - b^2 = (a+b) (a-b)

15^2 - 12^2 = (15 + 12 ) (15 - 12 )

                   =   27 * 3

                    =   81