Math, asked by sameerraghav, 1 year ago

factorise x square minus 1 minus 2 a minus a square

Answers

Answered by Deepsbhargav
127
=> x² - 1 - 2a - a² _____[◢given]

=> x² - [1 + 2a + a²]

=> x² - [a² + 2a +1]

=> x² - [a² + a + a + 1]

=> x² - [ a(a+1) + 1(a+1) ]

=> x² - [ (a+1).(a+1) ]

=> x² - (a+1)² _________[◢Eq(1)]

_____________________________

◢NOW

● WE KNOW THAT

=> (A²-B²) = (A+B)(A-B)
___________[◢ALGEBRAIC PROPETY]
_____________________________

● USING THIS PROPERTY FOR Eq(1)

◢THEN,

=> x² - (a+1)²

=> [ {x + (a+1)}.{x - (a+1)} ]

=> [(x+a+1).(x-a-1)]
________________[◢ANSWER]

===================================

BE \: \: BRAINLY
Answered by aarnaanasinghajaycha
1

it is by using the formula a-b whole square

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