Question

Efetue:
a- [-7+14 ÷(5-√49)]÷7

b- [-13+13x(-1-3x2²)]÷14

c- -5[(-5)²-(-2-√9)x5]÷10

d- 2x[10-(3²-4x5)-√49]÷18

e- (2+3²x2)÷10

Answer 1

a) [ 7 / (-2)] /7 --> 0,5
b) [ -13 + 13 (-1 -3.4)] /14 --> [-13 + 139-13)) / 14 = 13
c) -5 (25+25) / 10 = -25
d) (2+18) / 10 = 2