Answer `(x + 2) (x + 3) (x + 4) (x + 5) - 48`
`= (x + 2) (x + 5) (x + 3) (x + 4) - 48`
`= (x^2 + 2x + 5x + 10) (x^2 + 3x + 4x + 12) - 48`
`= (x^2 + 7x + 10) (x^2 + 7x + 12) - 48`
ধরি, `x^2 + 7x + 10 = a`
:.প্রদত্ত রাশি,
`= x^2 + 7x + 12 = x^2 + 7x + 10 + 2 = a + 2`
`= a(a + 2) - 48`
`= a^2 + 2a - 48`
`= a^2 + 8a - 6a - 48`
`= a(a + 8) - 6(a + 8)`
`= (a + 8) (a - 6)`
`= (x^2 + 7x + 10 + 8) (x^2 + 7x + 10 - 6)`
[a এর মান বসিয়ে]
`= (x^2 + 7x + 18) (x^2 + 7x + 4)`
`= (x^2 + 7x + 4) (x^2 + 7x + 18)` (Ans)