Question

(– 11 – 4) . (– 9 + 3) – (– 2 +2) ÷ (– 5 – 5) + (– 9 – 4 + 6)



( – 3)² . (– 9 + 7) – ( – 2)³ . (– 15 – 5) + 1

Answer 1

Resposta:

a) 83

b) -177

Explicação passo-a-passo:

a) $\left(-11-4\right)\left(-9+3\right)-\left(-2+2\right)\div \left(-5-5\right)+\left(-9-4+6\right)$

$=-15\left(-9+3\right)-\left(-2+2\right)\div \left(-5-5\right)+\left(-9-4+6\right)\\=-15\left(-6\right)-\left(-2+2\right)\div \left(-5-5\right)+\left(-9-4+6\right)\\=-15\left(-6\right)-0\div \left(-5-5\right)+\left(-9-4+6\right)\\=-15\left(-6\right)-0\div \left(-10\right)+\left(-9-4+6\right)\\=-15\left(-6\right)-0\div \left(-10\right)-7\\=90-0\div \left(-10\right)-7\\=90-0-7\\=83$

b) $\left(-3\right)^2\left(-9+7\right)-\left(-2\right)^3\left(-15-5\right)+1$

$=\left(-3\right)^2\left(-2\right)-\left(-2\right)^3\left(-15-5\right)+1\\=\left(-3\right)^2\left(-2\right)-\left(-2\right)^3\left(-20\right)+1\\=9\left(-2\right)-\left(-2\right)^3\left(-20\right)+1\\=9\left(-2\right)-\left(-8\right)\left(-20\right)+1\\=-18-\left(-8\right)\left(-20\right)+1\\=-18-160+1\\=-177$