Question

64.resolva

a)(+4)×(-8)+(+4)×(+10)=?

b)(-2)×(-12)+(+20)×(-2)=?

c)(-10)×(+5)+(+5)×(-3)=?

d)(+9)×(-3)+(-13)×(-3)=?

e)(+6)×(-1)+(-3)×(+6)×(+7)×(+6)=?

f)(-9)×(-4)+(-9)×(-3)+(+9)-(-9)=?

PRECISO DAS CONTAS

Answer 1

a) (+4)×(-8) + (+4)×(+10) = -32 +40 => 8
b) (-2)×(-12) + (+20)×(-2)= +24 -40 =>-16
c) (-10)×(+5) + (+5)×(-3) = -50 -15 => -65
d) (+9)×(-3) + (-13)×(-3) = -27 +39 => +12
e) (+6)×(-1) + (-3)×(+6)×(+7)×(+6) =
-6 -756 => -762
f) (-9)×(-4) + (-9)×(-3) + (+9) - (-9) =
+36 +27 +9 +9 = +36 +36 +9 = +36×2 +9 = +72 +9 => +81

Espero ter ajudado;