What is the Factorisation value of 9x²-1
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hey friend ✋! here is your solution
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✅To factorise - 9x^2-1
✔️(3x)^2-(1)^2 { Reason 9 can be written as (3)^2}
✅Using identity (a)^2-(b)^2=(a+b)(a-b)
✔️a=3x & b=1
✅(3x+1)(3x-1)=0
✔️3x+1=0 & 3x-1=0
✅x=-1/3 & x=1/3
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⭐️ Hope it helps you ⭐️
_____________________
✅To factorise - 9x^2-1
✔️(3x)^2-(1)^2 { Reason 9 can be written as (3)^2}
✅Using identity (a)^2-(b)^2=(a+b)(a-b)
✔️a=3x & b=1
✅(3x+1)(3x-1)=0
✔️3x+1=0 & 3x-1=0
✅x=-1/3 & x=1/3
________________________
⭐️ Hope it helps you ⭐️
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