Question

321- 21. [(2.3^3+4^4 :32)]- 52

2018^0+5^9:5^7-3.7

Answer 1

321- 21. [(2.3^3+4^4 :32)]- 52

=321- 21. [(2.27+256 :32)]- 52

=321-21.[(54+8)]-52

=321-21.62-52

=321-1203-52

=-754

Answer 2

2018^0+5^9:5^7-3.7

=1+25-3.7

=1+25-21

=26-21=5

Answer 3

321- 21. [(2.3^3+4^4 :32)]- 52

=321- 21. [(2.27+256 :32)]- 52

=321-21.[(54+8)]-52

=321-21.62-52

=321-1203-52

=-754

Answer 4

a, 321- 21. [(2.3³+4⁴ :32)]- 52

=321- 21. [(2.27+256 :32)]- 52

=321-21.[(54+8)]-52

=321-21.62-52

=321 - 1203 - 52

= -754

b, 

2018⁰+5⁹:5⁷-3.7

=1+25-3.7

=1+25-21

=26 - 21

= 5