Answer :
Step-by-step explanation:
Let a = 3x and b = 5 then
(a+b)(a-b) = a²-b² by identity (actually by distribution method)
(3x)²-(5)² = 9x²-25
Step-by-step explanation:
Let a = 3x and b = 5 then
(a+b)(a-b) = a²-b² by identity (actually by distribution method)
(3x)²-(5)² = 9x²-25