Question

Q2 Solve using Identity (a+b)(a-b) a² - b² = (a + b)(a - b)
i) ( 3ab + 2c)²-(3ab - 2c)²?
ii) (3ab + 2c ) ²+ ( 3ab-2c)²?​

Answer 1

Step-by-step explanation:

I) (3ab+2c)^2-(3ab-2c)^2

=[ (3ab+2c)+(3ab-2c) ] [(3ab+2c)-(3ab-2c) ]

= (3ab+2c+3ab-2c)(3ab+2c-3ab+2c)

= 6ab * 4c

=24abc

Answer 2

24 abc its right answer okay