Question

a. (–6)² – 12
b. (–5).(+6)–(–3)²
c. (–8)²:(–16)+5
d. (–6)º + (–3)² + (–2)³ . (–1)
e. 3² – 4² – (—2).(–4)
f. (–7)²–(–7).(–6)

Answer 1

a)
$(-6)^2-12= \\ 36-12=24$

b)
$(-5).(+6)-(-3)^2= \\ (-30)-(+9)= \\ -30-9=-39$

c)
$(-8)^2:(-16)+5= \\ (+64):(-16)+5= \\ -4+5=1$

d)
$(-6)^0+(-3)^2+(-2)^3.(-1)= \\ 1+(+9)+(-8).(-1)= \\ 1+9+(+8)= \\ 1+8+9=18$

e)
$3^2-4^2-(-2).(-4)= \\ 9-16-(+8)= \\ 9-16-8= \\ 9-24=-15$

f)
$(-7)^2-(-7).(-6)= \\ 49-(+42)= \\ 49-42=7$