Question

(7a + 6b) (7a - 6b)​

Answer 1

(7a+6b) (7a-6b) (bcoz (a+b) (a- b)= (a)sq-(b) sq)

(7a)sq - (6b)sq

49a sq - 36b sq

Answer 2

Answer:

(7a + 6b) (7a - 6b)

...(Distribute)

(7a + 6b) (7a - 6b)

7a ( 7a - 6b) + 6b ( 7a - 6b)

...(Distribute)

7a ( 7a - 6b) 6b ( 7a - 6b)

49a square - 42ab + 6b (7a - 6b)

49a square - 42ab + 42ab - 36b square.

49a square - 42ab + 42ab - 36b square.

Solution: 49a square - 36b square.

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