Question

Упрости √81 - √32+0,3√800=

Answer 1

$sqrt{81} = 9$

$sqrt{32} = sqrt{2*16} = 4 sqrt{2}$

$0,3sqrt{800} = sqrt{0,09*800} = sqrt{72} = sqrt{36*2} = 6sqrt{2}$

9 - $4 sqrt{2} + 6 sqrt{2}$ = 9 + 2$sqrt{2}$