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Question
factorise: `5"x"^2 - (20"x"^4)/9`
Sum
Solution
`5"x"^2 - (20"x"^4)/9`
`= 5"x"^2[1 - "4x"^2/9]`
`= 5"x"^2 [1 - "2x"/3][1 + "2x"/3]`
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Factorisation of Trinomials
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