Question

d) (√6 + 2)² + (√3-2√2)²-(√10-√3)(√10 +√3); e)(√7-2) +2(√7+1)+(√7-3)(√7+3).​

Answer 1

Răspuns:

d) 14

e)  3√7 - 2

Explicație pas cu pas:

d)

(√6 + 2)² + (√3-2√2)²-(√10-√3)(√10 +√3) =

= 6 + 4√6 + 4 + 3 - 4√6 + 8 -(10-3)

= 21 - 7

= 14

e)

(√7-2) +2(√7+1)+(√7-3)(√7+3) =

= √7 - 2 + 2√7 + 2 + (7-9)

= 3√7 + (-2)

= 3√7 - 2