Question

Facterise 4a²-b²+2à+b

Answer 1

Answer:

4a²- b²+2à + b

[(2a)² - b²] +2a + b

[(2a)² - b²]  + 2a + b      

(2a-b) ( 2a+b) +1 (2a+b)            [applying x²-y² = (x+y) ( x-y)]

taking the underlined parts common from the above

(2a+b) [(2a-b) +1 ]

(2a+b) (2a-b+1)

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