Question

$(2 + \sqrt3)(2 - \sqrt3) is \: a \: irrational?$



Class:- 9th
subject:- maths
chapter :- polynomial
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Answer 1

Answer:

No it is rational no.

Step-by-step explanation:

When we'll use farmula (a+b)(a-b)=a^2-b^2 in above equation then we'll get (2+✓3)(2-√3)=(2)^2-(✓3)^2=4-3=1

so value is 1 which can be written as 1/1, It is in the form of p/q where p,q are integers and q is not equal to zero.

hence given no. is a rational no.