Question

3)Resolva as Distributivas no caderno:
a) 3.( 4 + 5) = b) ( 5 + 7) . ( 6 + 1) =

= =
= =
= =
c) (x + 2).( x + 4) d) ( 3 + y).(2 + y).( 3 + 1)=
= =
= =
= =

e) ( 8 + 2).( 10 + 6)= f) ( 4 + 5).(2 + 1).( 7 + 6)=

= =
= =
= =
g) 12.(3 + 5) = h) ( 1 + 5).(2 + 3).( 5 + 2)

= =
= =
= =

Answer 1

Resposta:

a)27

b)72

c)-3

d)$\frac{2}{-9}$

e)160

f)432

g)96

h)210

Explicação:

a) 3.(4+5)=

3.9=27

b)(5+7).(6+1)=

12.6=72

c)(x+2).(x+4)=

x.x=-2-4

2x=-6

x=$\frac{2}{-6}$

x=-3

d)(3+y).(2+y).(3+1)=

(3+y).(2+y).4=

y.y=-3-2-4

2y=-9

y=$\frac{2}{-9}$

e)(8+2).(10+6)=

10.16=

160

f)(4+5).(2+1).(7+6)=

9.3.16=

27.16=

432

g)12.(3+5)=

36+60=

96

h)(1+5).(2+3).(5+2)

6.5.7=

30.7=

210