Factorise 1/9 x^2y^2-1/16y^2z^2
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y²(1/3x+1/4 z ) ( 1/3x - 1/4z )
Step-by-step explanation:
1/9 x²y² - 1/16 y²z²
=(1/3 xy)²-(1/4yz)²
=(1/3 xy+1/4yz)(1/3xy-1/4yz)
=y(1/3x+1/4 z )*y*( 1/3x - 1/4 z)
=y²(1/3x+1/4 z ) ( 1/3x - 1/4z )
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