Question

a ) 7² - ( 7 - 3 )³ + 6 =
b) 1² + ( 16 - 4 )² + 3³ : 3 + ( 2² : 2 ) - 3 =
c) 5³ : 5+ 6 + 12 + ( 13 - 6 ) =

Answer 1

a )
${7}^{2} - {( 7 - 3)}^{ 3 } + 6 = \\ 49 - {4}^{3} + 6 = \\ 49 - 64 + 6 = \\ - 15 + 6 = \\ - 9$
b)
${1}^{2} + {(16 - 4)}^{2} + {3}^{3} \div 3 + ( {2}^{2} \div 2) - 3 = \\ 1 + {12}^{2} + 9 \div 3 + (4 \div 4) - 3 = \\ 1 + 144 + 3 + 1 - 3 = \\ 145 + 4 - 3 = \\ 149 - 3 = \\ 146$
c)
${5}^{3} \div 5 + 6 + 12 + (13 - 6) = \\ 125 \div 5 + 6 + 12 + 7 = \\ 25 + 6 + 12 + 7 = \\ 31 + 12 + 7 = \\ 43 + 7 = \\ 50$

Answer 2

a) 49-(+4)^3+6=
49-4+6=
51
b) 1+(+12)^2+27:3+(4:2)-3
1+11+9+2-3
145+11-3
156-3
153
c) 125:5+6+12+(13-6)
25+6+12+7
31+12+7
43+7
50