sstrike's answer to Nezuko 12345's Secondary 3 A Maths Singapore question.
DOTS
a²-b² = (a+b)(a-b)
reverse operation
(a+b)(a-b) = a²-b²
a²-b² = (a+b)(a-b)
reverse operation
(a+b)(a-b) = a²-b²
Ohhh I see now thank you :>
Welcome. Best wishes
Tahnks
360 Tutoring Program