Question

Expand (3a +4b+5c)^2 using suitable identity

Answer 1

(3a+4b+5c)²=(3a)²+(4b)²+(5c)²+2(3a*4b+4b*5c+5c*3a)

=9a²+16b²+25c²+2(12ab+20bc+15ac)

=9a²+16b²+25c²+24ab+40bc+30ac

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Answer 2

Step-by-step explanation:

व्हाट यू मीन बाय लैंड ट्रांसपोर्ट