Question

sabendo que x+y=3 e 2a-b =25 determine o valor numerico da expressao 2ax-bx+2ay-by marque a opçao correctable​: a( )75 b( )-75 c( )22 d( )-28

Answer 1

2ax-bx+2ay-by

2ax+2ay-bx-by
2a(x+y)-b(x+y)
(x+y)(2a-b)
(3)(25)
75

Alternativa A