Question

Efetue como achar melhor.
a) (m - 3)²
b) (2a - 5)²
c) (7 - 3c)²
d) (5x - 2y)²
e) (2 - x³)2
f) (xy -10)²
g) (x - 0,2)²
h) (-4x - 3y)²

Answer 1

a) (m-3)^2
(m-3)*(m-3)
m^2-3m-3m+9
m^2-6m+9

b) (2a-5)*(2a-5)
4a^2-10a-10a+25
4a^2-20a+25

c) (7-3c)*(7-3c)
49-21c-21c+9c^2
9c^2-42c+49

d) (5x-2y)*(5x-2y)
25x^2-10xy-10xy+4y^2
25x^2+4y^2-20xy

e) (2-x^3)*(3-x^3)
6-2x^3-3x^3+x^6
-5x^3+x^6+6