Question

Ma ajuat cineva ?? Cerinta este
calculeaza folosind formulele de calcul prescurtat

Answer 1

a) (a+b)²=a²+2ab+b²       (a-b)²=a²-2ab+b²  

 (√2+√3)=2+2√6+3=5+2√6

    (1-√6)²=1-2√6+6=7-2√6

5+2√6+7-2√6=12

c) (√7+3√2)²=7+6√14+18=25+6√14

(3-√14)²=9-6√14+14=23-6√14

25+6√14+23-6√14=48