Question

Calcule o valor das expressões: a) 5 – { +3 – [(+2)² -(-5)² + 6 – 4 ]} = b) 15 – { -3 + [(5 – 6)² . (9 -8 ) ² + 1]} = c) 18 – { 6 – [ -3 – (5 – 4) – (7- 9)³ ] – 1 } = d) -2 + { -5 –[ -2 – (-2)³ – 3- (3 -2 )⁹ ] + 5 } = e) 4 – {(-2)² . (-3) – [ -11 + (-3) . (-4)] – (-1)} =

Answer 1

Resposta:

A) $=21$

B) $=20$

C) $=7$

D) $=-4$

E) $=12$

Explicação passo a passo:

A) $5-3-\left[\left(2\right)^2-\left(-5\right)^2+6-4\right]$

$=5-3-\left(-19\right)$

$=21$

B) $15-\left(-3\right)+\left[\left(5-6\right)^2\left(9-8\right)^2+1\right]$

$=15-\left(-3\right)+2$

$=20$

C) $18-6-\left[-3-\left(5-4\right)-\left(7-9\right)^3\right]-1$

$=18-6-4-1$

$=7$

D) $-2+\left(-5\right)-\left[-2-\left(-2\right)^3-3-\left(3-2\right)^9\right]+5$

$-2-\left(-2\right)^3-3-\left(3-2\right)^9$

$=-2-\left(-2\right)^3-3-1^9$

$=-2-\left(-8\right)-3-1^9$

$=-2-\left(-8\right)-3-1$

$=2$

$=-2+\left(-5\right)-2+5$

$=-2-5-2+5$

$=-7-2+5$

$=-9+5$

$=-4$

E) $-\left(-2\right)^2\left(-3\right)-\left[-11+\left(-3\right)\left(-4\right)\right]-\left(-1\right)$

$=-\left(-2\right)^2\left(-3\right)-1-\left(-1\right)$

$=-4\left(-3\right)-1-\left(-1\right)$

$=12-1-\left(-1\right)$

$=12$