Question

a) (-5)²-12=
b) (-5). (+6) - (-7)²=
c) (-9)²: (-16) +5=​

Answer 1

Resposta:

$a)(-5)^{2} -12\\25-12\\13$

$b)(-5).(+6)-(-7)^{2} \\(-30)-49\\-79$

$c)(-9)^{2} :(-16)+5$

$9^{2} :(-16)+5$

$-\frac{9^{2} }{16} +5$

$-\frac{81}{16} +5$

$\frac{-81+80}{16}$

$-\frac{1}{16}$