Question

Calcule o Valor das expressões abaixo:
a) 45 + 5²
d) -2³ - 30 + 1
b) -28 + 10²
e) (-8 )² - 2 (-1 )
c) -17 - 1⁵ - 6


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Answer 1

Resposta:

a) 70

d) -37

b) 72

e) 66

c) -24

Explicação passo-a-passo:

a) $45+5^2$

$=45+25\\=70$

d) $-2^3-30+1$

$=-8-30+1\\=-37$

b) $-28+10^2$

$=-28+100\\=72$

e) $\left(-8\right)^2-2\left(-1\right)$

$=64-2\left(-1\right)\\=64-\left(-2\right)\\=66$

c) $-17-1^5-6$

$=-17-1-6\\=-24$

Answer 2

Resposta:

a) 70

d) -37

b) 72

e) 66

c) -24

Explicação passo-a-passo:

a) 45+5^245+5

2

\begin{gathered}=45+25\\=70\end{gathered}

=45+25

=70

d) -2^3-30+1−2

3

−30+1

\begin{gathered}=-8-30+1\\=-37\end{gathered}

=−8−30+1

=−37

b) -28+10^2−28+10

2

\begin{gathered}=-28+100\\=72\end{gathered}

=−28+100

=72

e) \left(-8\right)^2-2\left(-1\right)(−8)

2

−2(−1)

\begin{gathered}=64-2\left(-1\right)\\=64-\left(-2\right)\\=66\end{gathered}

=64−2(−1)

=64−(−2)

=66

c) -17-1^5-6−17−1

5

−6

\begin{gathered}=-17-1-6\\=-24\end{gathered}

=−17−1−6

=−24