Question

Va rogggg multttt deee totttttttttttttt d au 27 de puncte vreau ex 5 ​

Answer 1

Răspuns:

Explicație pas cu pas:

a)

√2*1 + √2*√2 = √2 + 2

b)

√5*2 - √5*√20 = 2√5 - √100 = 2√5 - 10

c)

√3*√3 + √5*√3 = 3 + √15

d)

3*(-√2) - √2*(-√2) = -3√2 + 2

e)

-2√3*√3 - (-2√3)*√6 = -6 + 2√18 = -6 + 6√2

f)

√2*√2 - √2*√6 + √2*√10 = 2 - √12 + √20 = 2 - 2√3 + 2√5

Answer 2

Rezolvare:

a) $\sqrt{2} (1+\sqrt{2} )$ = $\sqrt{2} + 2$

b) $\sqrt{5} (2-\sqrt{20})$ = $2\sqrt{5} - \sqrt{100}$ = $2\sqrt{5} - 10$

c)$(\sqrt{3}+ \sqrt{5} )\sqrt{3}$ = $3+\sqrt{15}$

d)$(3 -\sqrt{2}) (-\sqrt{2})$ = $-3\sqrt{2} + 2$

e)$(-2\sqrt{3}) (\sqrt{3}- \sqrt{6})$ = $-6 + 2\sqrt{18} = -6+6\sqrt{2}$

f)$\sqrt{2} (\sqrt{2}- \sqrt{6} +\sqrt{10}) = 2-\sqrt{12} +\sqrt{20} =2-2\sqrt{3} +2\sqrt{5}$