Question

cómo se resuelve:
[3 {(2-5)^2 - 4 (3/2 - 10/4)^3} +3 (7/9)] - √49

Answer 1

[3{(2-5)²-4(3/2-10/4)³}+3(7/9)]-√49
[3{(-3)²-4(-1)³}+21/9] -7
[3{9-4(-1)}+7/3]-7
[3{9-4}+7/3] -7
[3{5}+7/3] -7
[15+7/3] -7
[(45+7)/3] -7
[52/3] -7
aplicamos
[a/b]-c= [a-bc]/b
[52-3*7]/3
[52-21]/3
31/3
espero q sea d ayuda