Question

. If 2x + y = 10 and xy = 20 then x and y are​

Answer 1

1.for making the text look coloured refer the below syntax and ignore the dots

[.tex]\red{the\:text\:appears\:in\:red}[./tex]

result

\red{the\:text\:appears\:in\:red}thetextappearsinred

2.for making the text marquee

[.tex]<marquee>{the\:text\:appears\:like\:this}</marquee>[./tex]

result

= < marquee > {the\:text\:appears\:like\:this} < /marquee > <marquee>thetextappearslikethis</marquee>

3. for making the text look bold

[.tex]\bold{the\:text\: appears\: like\: this }[./tex]

result =

\bold{the\:text\: appears\: like\: this }thetextappearslikethis

4. for showing the exponential value

[.tex]{no.}^{power}[./tex]

result

= {no.}^{power}[ /tex] 5. for showing the square root value [.tex]\sqrt{no.}[./tex] result = $\sqrt{no.}no. </p><p>power</p><p>$5.forshowingthesquarerootvalue[.tex]

no.

[./tex]result=[tex]

no.

\bold{\boxed{thanx}}

thanx

follow me next

Answer 2

Answer:

Given

2x + y = 10 and xy = 20

To find

find x and y...?

Solutions

2x + y = 10

xy = 20

we know that;

xy = 20

x = 20 - y

According to the questions;

2x + y = 10

2(20 - y) + = 10

40 - 2y = 10

-2y = 10 - 40

-2y = -30

y = -30/-2

y = 15

now,

x = 20 - y

x = 20 - 15

x = 5

hence, x = 5 and y = 15.