Question

encontre a razao das p.a s
a) (7,15,23,...)
b) (x+y,3x+4.y,...) ​

Answer 1

Explicação passo-a-passo:

a) (7,15,23,...)

r=a2-a1

r=15-7

r=8

b) (x+y,3x+4.y,...)

r=a2-a1

r=3x+4y-(x+y)

r=3x-x+4y-y

r=2x+3y

Answer 2

Resposta:

a) r= 15-7= 8

b) r=3x+4y-(x+y)=3x+4y-x-y= 3x-x+4y-y= 2x+3y