Question

2
Desenvolva os produtos. Observe o exemplo.
(m - 7)2 = m2 - 14m + 49
a) (t + 8)
d) (10 - 4x)?
m2-6
2
3
e)
2z
b) (2y2 - 4)
h) (5z2 - 3m3)2
5
f)
c) (3m+ + 5)2
(
+z
i) (V2 + V7)2
On nyomnlo​

Answer 1

a)(5x+8).(5x−8)=25x

2

−40x+40x−64=

25x

2

−64

\sf b)\:(6x + 2y).(6x - 2y) = 36x^2 - 12xy + 12xy - 4y^2 = \boxed{\boxed{\sf 36x^2 - 4y^2}}b)(6x+2y).(6x−2y)=36x

2

−12xy+12xy−4y

2

=

36x

2

−4y

2

\sf c)\:(u + v).(v - u) = u.v - u^2 + v^2 - u.v = \boxed{\boxed{\sf v^2 - u^2}}c)(u+v).(v−u)=u.v−u

2

+v

2

−u.v=

v

2

−u

2