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1)Daca a=√3-√6si b=√8-3,atunci(2a²-b²)^2013 este:
2)Rezultatul calcului(√5ab²)²:(5/√5ab³) este:


Răspuns :

1) a=√3-√6
b=√8-3,
(2a²-b²)²⁰¹³=
=
[2*(3+6-2*√18)-(8+9-6√8)]²⁰¹³ =
= (6+12-12√2-17+12√2)²⁰¹³ =
= (18-17)²⁰¹³ = 1²⁰¹³ = 1

2)(√5ab²)²:(5/√5 *  ab³) =
= (5a²b⁴: 5ab³)*√5= √5*ab