Question

factorise a² +4b² -4ab - 9c²​

Answer 1

Answer:

Step-by-step explanation:

a²+4b²-4ab-9c²

(a²+4b²-4ab)-9c²

((a)²+(2b)²-2*a*2b)-(3c)²

(a-2b)²-(3c)²

((a-2b)+(3c))((a-2b)-(3c))

(a-2b+3c)(a-2b-3c)

hope it helps

Answer 2

Answer:

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