Question

Me ajudem a resolver essas expressoes
A) 100 – {[30 – ( 5 + 1)²] : 6 + √81 } : 8
B) 72. [ 4³ - ( √121 + 2 .26)]
C) 42 . [ 4. ( 32 – 4 . √49 ) -1 ] : 63

Answer 1

Olá,

Vamos lá,

A) 100 – {[30 – ( 5 + 1)²] : 6 + √81 } : 8 
=100 – {[30 – ( 6)²] : 6 + 9 } : 8
=100 – {[30 – 36] : 6 + 9 } : 8
=100 – { -6 : 6 + 9 } : 8  
=100 – { - 1+ 9 } : 8  
=100 – { 8 } : 8  
=100 –  8 : 8
=100 - 1
= 99 

B) 72. [ 4³ - ( √121 + 2 .26)] 
=72. [ 64 - ( 11 + 52)]
=72. [ 64 - 63]
=72. 1
= 72

C) 42 . [ 4. ( 32 – 4 . √49 ) -1 ] : 63
=42 . [ 4. ( 32 – 4 . 7 ) -1 ] : 63
=42 . [ 4. ( 32 – 28 ) -1 ] : 63
=42 . [ 4. 4 -1 ] : 63
=42 . [ 16 -1 ] : 63
=42 . 15 : 63
=630 : 63
= 10