Question

urgenteeeeee

Resolva cada produto notável:

a) (3x−7)2=
b) (y3−6).(y3+6) =
c) (25x+8)2=

Answer 1

Resposta:

a) (3x−7)^2=

(3x-7)×(3x-7)=

9x^2-21x-21x+(-7)^2=

= 9x^2-42x+49

b) (y^3−6).(y^3+6) =

y^6+6y^3-6y^3-(6)^2=

y^6+0-36=

y^6-36

c) (25x+8)2=

(25x+8)×(25x+8)

625x^2+200x+200x+8^2=

=625x^2+400x+64

espero que isso ajude vc

Answer 2

Oie, Td Bom?!

a)

$= (3x - 7) {}^{2}$

$= (3x) {}^{2} - 2 \: . \: 3x \: . \: 7 + 7 {}^{2}$

$= 9x {}^{2} - 42x + 49$

b)

$= (y {}^{3} - 6) \: . \: (y {}^{3} + 6)$

$= (y {}^{3} ) {}^{2} - 6 {}^{2}$

$= y {}^{6} - 36$

c)

$= (25x + 8) {}^{2}$

$= (25x) {}^{2} + 2 \: . \: 25x \: . \: 8 + 8 {}^{2}$

$= 625x {}^{2} + 400x + 64$

Att. Makaveli1996