Expand each of thr following using suitable identites . A. (5x+7y-2z)^2B. (1/2a+1/2b+1/2c)^3please please gyus help kar do 5 min mai chayiye. iska answer kuounki its very important and urgent for me plese yrrrrrr mujhe iska answer 5 min mai de do please aur ha solution ke sath dena plaease

Expand each of thr following using suitable identites . A. (5x+7y-2z

1.	Expand each of thr following using suitable identites . A. (5x+7y-2z)^2B. (1/2a+1/2b+1/2c)^3please please gyus help kar do 5 min mai chayiye. iska answer kuounki its very important and urgent for me plese yrrrrrr mujhe iska answer 5 min mai de do please aur ha solution ke sath dena plaease
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