Question

State whether (√7 − √3)(√7 + √3) is rational or irrational

Answer 1

Answer:

answer of your question

Answer 2

Step-by-step explanation:

$( \sqrt{7} - \sqrt{3} )( \sqrt{7} + \sqrt{3} ) \\ = ( \sqrt{7} ^{2} - \sqrt{3} ^{2} ) \\ = (7 - 3) \\ = 4. \\ 4 \: is \: a \: rational \: nubmer \: so \: it \: is \: also \: rational \: number.$