Question

Gente resolve esse ai pfvr?
coloca as contas pfvr

1) 15 – [ (-5)² - (10 - (-2)³ ) ]


2) (3 + 5 + 2) : (-2)


3) [ 3² + ( 6 – 3)³] : ( 8 – 6)³


4) 4 – {(-2)² . (-3) – [ -11 + (-3) . (-4)] –
(-1)}


5) 50 : { -5 + [ -1 –(-2)⁵ : (-2)³ ]}


6) (-3 + 2 – 1)³ - ( -3 + 5 – 1)⁸ + 3


7) ( 7 – 2 .14) : (-21) – ( 5 – 2 ) : 3

8) { [ ( 18 – 3 ) + ( 7 + 5) – 2 ] + 5 } – 12


9) 26 + {
12 – [ ( 30 – 18) + ( 4 – 1) – 6 ] – 1 }


10) 38 – { 20 – [ 22 – ( 5 + 3) + ( 7 – 4 +1)]}

Answer 1

Resposta:

Explicação passo-a-passo:

1) 15 – [ (-5)² - (10 - (-2)³ ) ]

$15-\left[\left(-5\right)^2-\left(10-\left(-2\right)^3\right)\right]=15-7=8$

2) (3 + 5 + 2) : (-2)

$\left(3+5+2\right)\div \left(-2\right)=10\div \left(-2\right)=-5$

3) [ 3² + ( 6 – 3)³] : ( 8 – 6)³

$\left[3^2+\left(6-3\right)^3\right]\div \left(8-6\right)^3=36\div \left(8-6\right)^3=36\div \:2^3=36\div \:8=\frac{36}{8}=\frac{9}{2}$

4) 4 – {(-2)² . (-3) – [ -11 + (-3) . (-4)] –(-1)}

$4-\left\{\left(-2\right)^2\left(-3\right)-\left[-11+\left(-3\right)\left(-4\right)\right]-\left(-1\right)\right\}=4-\left(-12\right)=16$

5) 50 : { -5 + [ -1 –(-2)⁵ : (-2)³ ]}

$50\div \left\{-5+\left[-1-\left(-2\right)^5\div \left(-2\right)^3\right]\right\}=50\div \left(-10\right)=-5$

6) (-3 + 2 – 1)³ - ( -3 + 5 – 1)⁸ + 3

$\left(-3+2-1\right)^3-\left(-3+5-1\right)^8+3\\=\left(-2\right)^3-\left(-3+5-1\right)^8+3\\=\left(-2\right)^3-1^8+3\\=-8-1^8+3\\=-8-1+3\\=-6$

7) ( 7 – 2 .14) : (-21) – ( 5 – 2 ) : 3

$\left(\:7\:-\:2\:.14\right)\:\div \left(-21\right)\:-\:\left(\:5\:-\:2\:\right)\:\div \:3=\\\\\frac{7-2.14}{-21}-\frac{5-2}{3}=-\frac{4.86}{21}-\frac{5-2}{3}=-\frac{4.86}{21}-\frac{5-2}{3}=\\=-\frac{1\cdot \:21}{21}-\frac{4.86}{21}=\frac{-1\cdot \:21-4.86}{21}=\frac{-25.86}{21}=-\frac{25.86}{21}=-1.23142\dots$

8) { [ ( 18 – 3 ) + ( 7 + 5) – 2 ] + 5 } – 12

$\left\{\left[\left(18-3\right)+\left(7+5\right)-2\right]+5-12\right\}=25+5-12=18$

9) 26 + {12 – [ ( 30 – 18) + ( 4 – 1) – 6 ] – 1 }

$26+\left\{12-\left[\left(30-18\right)+\left(4-1\right)-6\right]-1\right\}=26+2=28$

10) 38 – { 20 – [ 22 – ( 5 + 3) + ( 7 – 4 +1)]}

$38-\left\{20-\left[22-\left(5+3\right)+\left(7-4+1\right)\right]\right\}=38-2=36$