Factorise-100-9x^2

1.	Factorise-100-9x^2
Answer» 100-9x²) (10²-9x²)(10x²-3x²) (a²-b²=(a+b)(a-b) a=10&b=3x. (10+3x) (10-3x) multiply 3 by -1 to get -3 (10+3x) (10-3x)...? 100-9x^2=10^2-(3x)^2=(10+3x)(10-3x)

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