Question

3x+2y=5, x=2y+7​​




problema resuelto asta la comprobasion
xfa es para ahorita​

Answer 1

Respuesta:

Expanded Form

$\sf{\red1.\: 3^3+2^5}1.3$

3

+2

5

$\begin{gathered}\sf{Expanded\:Form:} \\ (3×3×3) + (2×2×2×2×2) \\ = 27 + 59997\end{gathered}$

ExpandedForm:

(3×3×3)+(2×2×2×2×2)

=27+32=59

$\sf{\red2.\:2^6÷4^2}2.2$

6

÷4

2

$\begin{gathered}\sf{Expanded\:Form:} \\ (2×2×2×2×2×2)÷(4×4) \\ = 64÷16= 4\end{gathered}$

ExpandedForm:

(2×2×2×2×2×2)÷(4×4)

=64÷16=4

$\sf{\red3. 3^2×5^2}3.3$

2

×5

2

$\begin{gathered}\sf{Expanded\:Form:} \\ (3×3)×(5×5) \\ = 9 × 25 = 225\end{gathered}$

ExpandedForm:

(3×3)×(5×5)

=9×25=225

$\sf{\red4.\:5^3×2^8}4.5$

3

×2

8

$\begin{gathered}\sf{Expanded\:Form:} \\(5×5×5)×(2×2×2×2×2×2×2×2) \\ =125×256= 32,000\end{gathered}$

ExpandedForm:

(5×5×5)×(2×2×2×2×2×2×2×2)

=125×256=32,000

$\sf{\red5.\:6^3-3^4}5.6$

3

−3

4

$\begin{gathered}\sf{Expanded\:Form:} \\ (6×6×6)-(3×3×3×3) \\ = 216 - 81 = 135\end{gathered}$

ExpandedForm:

(6×6×6)−(3×3×3×3)

=216−81=135

Answer 2

3x + 2y = 5
x = 2y + 7

Sustituimos

3(2y + 7) + 2y = 5
6y + 21 + 2y = 5
8y = 5-21
8y = -16
y = -16/8
y = -2


Sustituimos en la ecuación despejada con x

x = 2(-2) + 7
x = -4 + 7
x = 3

Un saludo