Math, asked by luckythegame216, 1 year ago

(3+√7) ( 3-√7) is rational or irational

Answers

Answered by shruti2099

3

Answer:

This is rational number

Answered by sift1208

2

Answer:

Rational

Step-by-step explanation:

Apply the identity

(a-b) (a+b) = a^2 - b^2

(3+√7) ( 3-√7) = (3)^2 - (√7)^2

= 9 - 7

= 2 which is rational.

Previous Question

Next Question

Similar questions

Math, 6 months ago

If 10 theta = 1/ root 7 show that cosec ² theta - sec² theta upon cosec²theta + sec²theta =3/4...

Science, 6 months ago

sunny and ram both write bicycle with good speed today both hard writing bicycle against the direction of each other but surprisingly the speed of bicycle of RAM is doubled then the speed bicycle of sunny the reason of it is (a) RAM is riding a bicycle at the direction (b) sunny is riding the bicycle the direction of wind (c) ram has very good bicycle (d)ram is riding the bicycle against...

English, 6 months ago

Part B OF SPEECH door and enter ohen the Toot house. It is Marcollous. My room is so big ...

Math, 1 year ago

X + 2 Y + 4 Z Square factorise...

Physics, 1 year ago

Who was Einstein.....???

Political Science, 1 year ago

Among the rude people women are generally degraded among civilized people they are exalted. 1.JAMES MILL 2.BERLIN 3.MARY ASTELL 4.ROUSSEAU.

Physics, 1 year ago

how much electrical energy will be converted to light energy by a 60 watt bulb is is switched on for 30 minutes...

Chemistry, 1 year ago

Calculate the number of moles of H2O present in 90g of H2O...