. Find the square of the following numbers. i. 32 ii. 35 iii. 86 iv. 93 v. 71 vi. 46

Dear Student

i. (32)²
= (30 +2)²
= (30)2+ (2)²+ 2×30×2 =900+4+120

= 1024

ii. (35)²
= (30+5 )²
= (30)2+ (5)²+ 2×30×5 =900+25+300
= 1225

iii. (86)²
=(90-4)²
= (90)2+ (4)²- 2×90×4 =8100+16–720 =8116–720
= 7396

iv. (93⁾²
= (90+3 )²
= (90)2+ (3)²+ 2×90×3 =8100+9+540
= 8649

v. (71)²
= (70+1 )²
= (70)2+ (1)²+2×70×1 =4900+1+140
= 5041

vi. (46)²
=(50-4)²
= (50)²+ (4)²- 2×50×4 =2500+16–400
= 2116


Thanks