Question

Sendo a= Raiz 27 - raiz 12 + raiz 147- 9 raiz 3 qual o valor de A2

Answer 1

√27=3√3     ,√12=2√2    ,√147 = 7√3   E 9√3

3√3-2√2+7√3-9√3=   (3+7-9)√3 -2√2

A=√3 -2√2⇒

A²= ( √3-2√2)² = (√3)²-2√3.2√2+ (2√2)²

3-4√6 +8 = 0
A²= 11-4√6