Question

2- Resolva as equações

Answer 1

Explicação passo-a-passo:

$\sf x=6\cdot2-(-1)\cdot4$

$\sf x=12+4$

$\sf x=16$

$\sf y=4\cdot1\cdot(-1)+(-1)\cdot0\cdot3+2\cdot0\cdot2-3\cdot1\cdot2-2\cdot0\cdot4-(-1)\cdot0\cdot(-1)$

$\sf y=-4-0+0-6-0-0$

$\sf y=-10$

Assim:

$\sf 2x-y^2=2\cdot16-(-10)^2$

$\sf 2x-y^2=32-100$

$\sf 2x-y^2=-68$