Question

expand using suitable identity (3a-5b+4c)^2​

Answer 1

Answer:

Step-by-step explanation:

• (3a-5b+4c)^2                      

                                   ║using (a-b+c)^2=a^{2} +b^{2}+c^{2} +2ac-2bc-2ab

• (3a)^{2} +(-5b)^{2} +(4c)^{2} +2*3a*4c-2*-5b*4c-2*3a*-5b      

• a=3a , b=-5b ,c=4c      
•   9a^{2} +25b^{2} +16c^{2} +24a+40bc+30ab

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