Class 9th math 4.3 solution english PCTB

Question # 01: Find HCF by factorization method:

\((ii)\) \(\;\) \(4x^2-9y^2,2x^2-3xy\)

Solution:

$\displaystyle 4x^{2} -9y^{2} =( 2x)^{2} -( 3y)^{2}$

$\displaystyle\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ =( 2x-3y)( 2x+3y)$

$\displaystyle 2x^{2} -3xy=x( 2x-3y)$

$\displaystyle \text{HCF} =2x-3y$

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