Question

Sabendo que (x + y) = 3 e (x + 1) = 4. qual o valor de x²+ y²x + y²+ x​

Answer 1

Resposta:

12

Explicação passo a passo:

$(x + 1) = 4\\x+1-1=4-1\\x=3\\\\(x + y) = 3 \\(3+y)=3\\3+y-3=3-3\\y=0\\\\\\x^2+y^2x+y^2+x=\\3^2+0^2\cdot \:3+0^2+3=\\=9+0+0+3\\=12$