Question

Calcule os seguintes produtos
A)(3X2). (6X2Y – 7X) =
B) (-2A%B2). (5 AB-3A2B+5)=
C)( 2x - 3). (2X2 +5 X) =
D)(2x + 3). ( 5X2 +2)=
E) ( 7X3). (3X2 - 8X®) =
F) (-23 X3). (5X2 + 2)=
G) (X+ 7). (X+7)=
H) (X - 12). (X + 12) =​

Answer 1

Resposta:

1) Efetue:

a) (+7x) + (-3x) = (R: 4x)

b) (-8x) + (+11x) = (R: 3x )

c) (-2y) + (-3y) = (R: -5y)

d) (-2m) + (-m) = (R: -3m)

e) (+5a²) + (-3a²) = (R: 2a²)

f) (+5x) + (-5x) = (R: 0)

g) (+6x) + (-4x) = (R: 2x)

h) (-6n) + (+n) = (R: -4n)

i) (+8x) – ( -3x) = (R: 11x)

j) (-5x) – (-11x) = (R: 6x)

k) (-6y) – (-y) = (R: -5y)

l) (+7y) – (+7y) = (R: 0 )

m) (-3x) – (+4x) = (R -7x)

n) (-6x) – ( -x) = (R: -5x)

o) (+2y) – (+5y) = (R: -3y )

p) (-m) –(-m) = (R: 0 )

2) Efetue :

a) (+ 3xy) – (-xy) + (xy) = (R: 5xy)

b) (+ 15x) – (-3x) – (+7x) + (-2x) = (R: 9x )

c) (-9y) –( +3y) – (+y) + (-2y) = (R: -15y)

d) (3n) + (-8n) + (+4n) – (-5n) – (-n) = (R: 5n)

3) Efetue:

a) (+1/2x) + (-1/3x) = (R: 1x/6)

b) ( -2/5x) + (-2/3x) = (R: -16x/15)

c) (-7/2y) + (+1/4y) = (R: -13y/4)

d) (+2m) +( -3/4m) = (R: 5m/4)

e) (+2/3x) - ( -3/2x) = (R: 13x/6)

f) (-3/4y) – (+1/2y) = (R: -5y/4)

g) (+2/5m) – (+2/3m) = (-4m/15)

h) (-3x) –(-2/5x) = (R: 13x/5)