Question

4- calcule:
 
a)    -20² + (+10)³                      b) 14² - (+5)²                             c) c)-3² + (+11)²
urgente ​

Answer 1

Resposta:

A) 600

$-20^{2} + (+10)^{3} \\-400 + 10^{3} \\-400 + 100\\-400 + 1000 = 600\\\\B) 14^{2} - (+5)^{2} \\196 - 5^{2}\\196 - 25 = 171 \\\\C) -3^{2} + (+11)^{2} \\-9 + 11^{2} \\-9 + 121 = 112$

Espero ter ajudado

Answer 2

Resposta:

-400 +1000 = +600

196-25 = 171

-9 + 121 = 112

Explicação: