Question

9xsquare+6xy-ysquare by factorisation

Answer 1

9x^2 +6xy+y^2
(a+b)^2= a^2+b^2+2ab
(3x)^2+2*3x*y+(y)^2
(3x+y)^2= (3x+y)(3x+y)

Answer 2

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