Question

Resolva as operações:

a) (4x+3)(4x-3)
b)(5b+30)(5b-30)
c)(3y+x)(3y-x)

Answer 1

Olá!!!

Resolução!!!

a)

= ( 4x + 3 ) • ( 4x - 3 )
= ( 4x )² - 3²
= 16x² - 9

b)

= ( 5b + 30 ) • ( 5b - 30 )
= ( 5b )² - 30²
= 25b² - 900

c)

= ( 3y + x ) • ( 3y - x )
= ( 3y )² - ( x )²
= 9y² - x²

Espero ter ajudado!!!

Answer 2

a)

(4x+3)(4x-3)=
16x²-12x+12x-9
16x²-9

b)

(5b+30)(5b-30)
25b²-150b+150b-900
25b²-900

c)

(3x+y)(3x-y)
9x²-3xy+3xy-y²
9x²-y²