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(5-√x)² = y-20√2
Solve for x and y.


Sagot :

Answer:

33

Step-by-step explanation:

(

5

x

)

2

=

5

2

(

2

×

5

×

x

)

+

x

=

25

10

x

+

x

=

(

x

+

25

)

10

x

In order to eliminate the irrational

20

2

term with

x

and

y

being integers, we must have:

10

x

=

20

2

Divide both sides by

10

to get:

x

=

2

2

So

x

=

(

2

2

)

2

=

8

y

=

x

+

25

=

8

+

25

=

33