C-03-Q106mediumsingle_mcqFactorize 9x2−30xy+25y29x^2 - 30xy + 25y^29x2−30xy+25y2:a(3x−5y)2(3x - 5y)^2(3x−5y)2b(3x+5y)2(3x + 5y)^2(3x+5y)2c(3x−5y)(3x+5y)(3x - 5y)(3x + 5y)(3x−5y)(3x+5y)d9x2+25y29x^2 + 25y^29x2+25y2ব্যাখ্যাHere 9x2=(3x)29x^2=(3x)^29x2=(3x)2, 25y2=(5y)225y^2=(5y)^225y2=(5y)2, and the middle term −30xy=−2⋅(3x)⋅(5y)-30xy=-2\cdot(3x)\cdot(5y)−30xy=−2⋅(3x)⋅(5y) is negative, matching (a−b)2(a-b)^2(a−b)2. So it factors as (3x−5y)2(3x-5y)^2(3x−5y)2.