Question

10) (3x - 4y)

a)( ) 27x + 108xy + 432xy + 48yº

b)( ) 27x2 - 108x®y + 432xy - 4873

c)( ) 27x - 108x’y + 432xy) - 48y

d)( ) 27x - 108xy + 432xy - 48y

e)( ) 27x2 - 108x’y + 432xy® - 48yº​

Answer 1

Resposta:

(3x+4y)^3

(a+b)^3=a^+b^3+3ab(a+b)

(3x+4y)=27x^3+64y^3+3*3x*4y(3x+4y)

=27x^3+64y^3+36xy(3x+4y)

=27x^3+64y^3+108x^y+144xy^2

SO the answer is (3x+4y)^3