thcsphcht2007 thcsphcht2007

10-10-2021
Mathematics

contestada

Find the number a and b with ab+ba is số chính phương

Respuesta :

lynnkc2000 lynnkc2000

10-10-2021

Answer:

(2,9) , (3,8) , (4,7) , (5,6)

Step-by-step explanation:

ab+ba = 10a+b+10b+a = 11a+11b = 11(a+b)

if a+b = 11 then ab+ba = 11²

(a,b) or (b,a) : (2,9) , (3,8) , (4,7) , (5,6)

check: 29+92 = 121 = 11²

56+65 = 121 = 11²

Answer Link

Otras preguntas

A man deposits $ 14 comma 14,000 at the beginning of each year for 8 years in an account paying 4% compounded annually. He then puts the total amount on depos

aymond bought a used truck for $18,800. If the sales tax in his state is 7 percent, what was the final price for his car? $1,316 $1,504 $20,116 $20,492

You have been called to a railroad yard for an unknown emergency. When you arrive on scene, you are directed to a tanker car, where two men are lying on the gro

The perimeter of rectangle is 48 cm. Find the sides of the rectangle if one of the sides is 12 cm longer than the other.

Please help with number 7! :D please and thank you!

QUESTION 13 What type of intrusive igneous rock are formed in the Cascade Mountains of the NW U.S.?

There are 10 roller coasters at 6 flags, and you only have time to ride 3 before the park closes. How many different ways can you create a path to 3 different r

Which statements are true in terms of aluminum conductors? I. They are typically compact stranded. II. They are heavier than copper conductors. III. They are li

Define present value.a. The present value is the value today of a sum of money to be received in the future and in general is less than the future value.b. The

Driving to work one morning, you get a flat tire. When using the car jack, you apply 120N of force to the jack and the jack in turn applies 2000N of force to li