Question

factorise x square - y square -9z square +6yz​

Answer 1

Answer:

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Answer 2

Step-by-step explanation:

x square-(y square+9z square-6yz)

x square -{(y) square+(3z) square-2(y)(3z)}

x square-(y-3z)2

{x-(y-3z)}{x+(y-3z)

(x-y+3z) (x+y-3z)