Question

find the product of ​

Answer 1

Answer:

36x=78square-48square

36x=3780

x=3780/36

x=105

Therefore,

x=105

Answer 2

(x+3)(x-3)(x^2+9)

= ( x + 3 ) ( x − 3 ) ( x 2 − 9 )

= [ ( x + 3 ) ( x − 3 ) ]( x^2 + − 9 )

= [ ( x + 3 ) ( x − 3 ) ] ( x^2 ) + ( [ x + 3 ) ( x − 3 ) ]( − 9 )

= x^4 − 9 x^2 − 9 x^2 + 81

= x^4 − 18 x^2 + 81

36x = 6084 − 1764

36x = 4320

x = 4320/36

x = 120