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  • Factorise the following expressions 20 l^2 m + 30 a l m

Q2 Factorise the following expressions

(V)

20 l^2 m + 30 alm

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We have, 
            20l^2m = 2 \times 2 \times 5 \times l \times l \times m
            30alm = 2 \times 3 \times 5 \times a \times l \times m
\therefore       on factorization we get,
20l^2m+30alm =(2\times 2 \times 5 \times l \times l \times m) + (2 \times 3 \times 5 \times a \times l \times m)
                                  =(2\times 5 \times l \times m)(2\times l + 3 \times a )
                                  =10lm(2l+3a)
                                                                                                                   

Posted by

Gautam harsolia

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