Question

Factorise: 4a² – 12a + 9 - x² + 2xy – y²
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Answer 1

(2a-3)^2 - (x - y)^2

[(2a-3)+(x-y)][(2a-3)-(x-y)]

Answer 2

Answer:

Step-by-step explanation:

4a²-12a+9-x²+2xy-y²

4a²-12a+9-(x²-2xy+y²)

(2a)²-2*2a*3+(3)²-((x)²-2*x*y+(y)²)

(2a-3)²-(x-y)²

((2a-3)+(x-y))((2a-3)-(x-y))

(2a-3+x-y)(2a-3-x+y)