Question

a) (3 + x)2 =
b) (x + 5)2 =
c) (x + y)2 =
e) (3x + 2)2 =
f) (2x + 1)2 =
g) ( 5+ 3x)2 =
i) (r + 4s)2 =
j) ( 10x + y)2 =
1) (3y + 3x)2 =

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Answer 1

Resposta:

a) (3 + x) 2 = 6 + 2x

a) 3 × 2 + 2x

a) = 6 + 2x

b) (x + 5) 2 = 2x + 10

b) 2x + 5 × 2

b) = 2x + 10

c) (x + y) 2 = 2x + 2y

c) x × 2 + y × 2

c) = 2x + 2y

e) (3x + 2) 2 = 6x + 2

e) 3x × 2 + 2 × 2

e) = 6x + 2

f) (2x + 1) 2 = 4x + 2

f) 2x × 2 + 2

f) = 4x + 2

g) (5 + 3x) 2 = 10 + 6x

g) 5 × 2 + 3x × 2

g) = 10 + 6x

i) (r + 4s) 2 = 2r + 8s

i) 2r + 4s × 2

i) = 2r + 8s

j) (10x + y) 2 = 20x + 2y

j) 10x × 2 + 2y

j) = 20x + 2y

1) (3y + 3x) 2 = 6y + 6x

1) 3y × 2 + 3x × 2

1) = 6y + 6x