Answer of question 1. iii and viii Write down the square of (iii) 5c + 2d (viii) 1 2 a 4 + 1 3 b 7 Share with your friends Share 0 Yash Raj answered this Dear Student. 1-iii) We know that (A+B)2=A2+B2+2ABso (5c+2d)2=25c2+4d2+2×5c×2d25c2+4d2+20cdviii)(12a4+13b7)2=(a42)2+(b73)2+2×12a4×13b7=a84+b149+a4b73 We hope that this answer solves your query. Regards. 1 View Full Answer Pooshika answered this It's not clear. -1 Sanjana Abhinav Singh answered this It's not clear. -1 Ishita answered this according to me in third one identity will be used . That is (a+b)^2=a^2 +b^2 +2ab (5c +2d )^2=(5c)^2+(2d)^2+ 2*5c*2d =25c^2+4d^2+20cd 1 Ishita answered this in eight identity a^3 +b ^3 =( a+b)(a ^2+b^2-ab) will be used . TRY IT . 1
