Question

calcule

a) (3 + x)2 =

b) (x + 5)2 =

c) (x + y)2 =

d) (x + 2)2 =

e) (3x + 2)2 =

f) (3x + 2)2 =

g) (2x + 1)2 =

h) (5 + 3a)2

i) (2a + x)2 =

j) (10x + y)2 =

Answer 1

Resposta:

a) 6+2x

b) 2x+10

c) 2x+2y

d) 2x+4

e) 6x+4

f) 6x+4

g) 4x+a

h) 10+6a

i) 4a+2x

j) 20x+2y

Explicação:

a) (3+x)×2 =

(3×2)+(x×2) =

6+2x

b) (x+5)×2 =

(x×2)+(5×2) =

2x+10

c) (x+y)×2 =

(x×2)+(y×2) =

2x+2y

d) (x+2)×2 =

(x×2)+(2×2) =

2x+4

e) (3x+2)×2 =

(3x×2)+(2×2) =

6x+4

f) (3x+2)×2 =

(3x×2)+(2×2) =

6x+4

g) (2x+1)×2 =

(2x×2)+(1×2) =

4x+2

h) (5+3a)×2 =

(5×2)+(3a×2) =

10+6a

i) (2a+x)×2 =

(2a×2)+(x×2) =

4a+2x

j) (10x+y)×2 =

(10x×2)+(y×2) =

20x+2y