Question

1 Efetue as adições algébricas.
a) 3xy - 11xy + 4xy
b) -yb? + yb? – 7yb? + 15yb
c) y + 3y - 2y - y
d) 0,5x + 1,4x + 2,8x - 2x
1
in
e)
at
a
4
3
3
3
3
f) xy - 2xy + xy
1 ab² - 2ab² + 2 ab?
n Zaza
9)​

Answer 1

a)-4xy

b)8yb^2

c)y

d)2,7X

e) 0

f)7X^2 11y^3

g)-5ab^2

h)0