Question

calcule o valor de cada expressão a)10²+80 b) 7²-5² c)3²-5³ d) √400-√900+2 e) -√1 +√81+√9 f)√100+√16-5²+6⁰ g)6×√25-4×√100​

Answer 1

A) 100 + 80 = 180
B) 49 - 25 = 24
C) 9 - 125 = - 116
D) 20 - 30 + 2 = - 10 + 2 = - 8
E) - 1 + 9 + 3 = 8 + 3 = 11
F) 10 + 4 - 25 + 1 = 14 - 25 + 1 = - 11 + 1 = - 10
G) 6 x 5 - 4 x 10 = 30 - 40 = - 10