Question

qual a razão e termos da PG (x, x+2, x+16)​

Answer 1

resolução!

( x + 2 )^2 = ( x ) ( x + 16 )

x^2 + 4x + 4 = x^2 + 16x

4 = 16x - 4x

4 = 12x

X = 4/12

X = 1/3

PG = { 1/3 , 7/3 , 49/3 }

q = a2 / a1

q = 7/3 ÷ 1/3

q = 7/3 * 3/1

q = 21/3

q = 7