Question

Ajuda ai pfv ai dou pontos​

Answer 1

Resposta:

a) $a+5b=$

$2+5.5=$

$2+25=$

$27$

b) $b-4ac=$

$-3-4.5.2=$

$-3-40=$

$-43$

c)

$\dfrac{a+b}{c}=$

$\dfrac{-3-5}{-2}=$

$\dfrac{-8}{-2}=$

$+4$

d) $ab+c=$

$-3.3+2=$

$-9+2=$

$-7$

e)

$\dfrac{m+3x}{y}=$

$\dfrac{-3+3.2}{7}=$

$\dfrac{-3+6}{7}=$

$\dfrac{3}{7}$

f)

$\dfrac{abc}{a+b}=$

$\dfrac{-1.2.3}{-1+2}=$

$\dfrac{-6}{1}=$

$-6$

g)

$\dfrac{xy+x}{x-y}=$

$\dfrac{-3.7-3}{-3-7}=$

$\dfrac{-24}{-10}=$

$\dfrac{12}{5}$

h) $x-4y=$

$-3-4.(-5)=$

$-3+20=$

$17$

i) $a-4mx=$

$-1-4.(-2).3=$

$-1+24=$

$23$

j)

$\dfrac{ab+c}{a}=$

$\dfrac{(-3).(-1)-2}{-3}=$

$\dfrac{3-2}{-3}=$

$-\dfrac{1}{3}$

Explicação passo-a-passo:

Answer 2

a) a+5b=a+5b=

2+5.5=2+5.5=

2+25=2+25=

2727

b) b-4ac=b−4ac=

-3-4.5.2=−3−4.5.2=

-3-40=−3−40=

-43−43

c)

\dfrac{a+b}{c}=

c

a+b

=

\dfrac{-3-5}{-2}=

−2

−3−5

=

\dfrac{-8}{-2}=

−2

−8

=

+4+4

d) ab+c=ab+c=

-3.3+2=−3.3+2=

-9+2=−9+2=

-7−7

e)

\dfrac{m+3x}{y}=

y

m+3x

=

\dfrac{-3+3.2}{7}=

7

−3+3.2

=

\dfrac{-3+6}{7}=

7

−3+6

=

\dfrac{3}{7}

7

3

f)

\dfrac{abc}{a+b}=

a+b

abc

=

\dfrac{-1.2.3}{-1+2}=

−1+2

−1.2.3

=

\dfrac{-6}{1}=

1

−6

=

-6−6

g)

\dfrac{xy+x}{x-y}=

x−y

xy+x

=

\dfrac{-3.7-3}{-3-7}=

−3−7

−3.7−3

=

\dfrac{-24}{-10}=

−10

−24

=

\dfrac{12}{5}

5

12

h) x-4y=x−4y=

-3-4.(-5)=−3−4.(−5)=

-3+20=−3+20=

1717

i) a-4mx=a−4mx=

-1-4.(-2).3=−1−4.(−2).3=

-1+24=−1+24=

2323

j)

\dfrac{ab+c}{a}=

a

ab+c

=

\dfrac{(-3).(-1)-2}{-3}=

−3

(−3).(−1)−2

=

\dfrac{3-2}{-3}=

−3

3−2

=

-\dfrac{1}{3}−

3

1

Bons estudos!