Question

resolva b)2x+3y=13 x2=4​

Answer 1

Explicação passo-a-passo:

b)

2x+3y=13

x²=4

x=√4

x=2 ou x=-2

3y=13-2x

3y=13-2.(2)

3y=13-4

3y=9

y=9/3

y=3

S={ 2,3}

3y=13-2x

3y=13-2.(-2)

3y=13+4

3y=17

y=17/3

S={-2,17/3}