Question

find out the square with out multiplication ( with the sums ) (i) 29^2
(ii) 34^2
(iii)85^2
(iv)95^2
(v) 66^2
(vi) 82^2
(vii) 102^2
( with the sums )
ex : 42 = (30+9)^2 = 40(40+2)+2(40+2)
=40^2+40×2+2×40+2^2
=1600+80+80+4=1764
do the sum like ex ​

Answer 1

Answer:

(I)29^2

Step-by-step explanation:

29^2 = (20+9)^2

= 20^2 + 2(20)(9) + 9^2. (by (a+b)^2 formula)

= 400 + 360 + 81

= 841

Answer 2

Answer:

(1) 841

(2) 1156

(3) 7225

(4) 9025

(5) 4356

(6) 6724

(7)10404