Question

Efectuează: a) 2+3•3^2-4^5÷64; b) 36•(39-19)÷4-3; c) 7^2+5^2-2•7•5 .​

Answer 1

Explicație pas cu pas:

a) 2+3×3^2-4^5÷64=

=2+3^3-4^5:4^3

=2+27-4^2

=29-16

=13

b)36×(39-19)÷4-3=

=36×20÷4-3

=36×5-3

=180-3

=177

c)7^2+5^2-2×7×5=

=49+25-70

=74-70

=4