( 9x² - 1) - ( 1 + 3x )² factorise
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(9x^2 - 1) - (1+3x)^2
= ((3x)^2-1) - (1+3x )^2
= (3x -1) (3x +1)- (1+3x)^2
= (3x+1)[(3x -1) - (1+ 3x )]
= (3x +1)[3x - 1 -1 -3x]
= (3x+1)(-2)
factor :- (3x+1) (-2)
NeelamG:
it helps u
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