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प्रश्न
Factorise the following:
`"m"^2 + 1/"m"^2 - 23`
बेरीज
उत्तर
`"m"^2 + 1/"m"^2 - 23` = [Add + 2 and – 2 to make – 23 as – 25]
= `"m"^2 + 1/"m"^2 + 2 - 2 - 23`
= `"m"^2 + 1/"m"^2 + 2 - 25`
= `"m"^2 + 1/"m"^2 + 2 xx "m" xx 1/"m" - 5^2`
= `("m" + 1/"m")^2 - 5^2`
= `("m" + 1/"m" + 5)("m" + 1/"m" - 5)`
shaalaa.com
Factorisation Using Identity a2 - b2 = (a + b)(a - b)
या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 3: Algebra - Exercise 3.5 [पृष्ठ १०५]
