Question

Va roggg urgent!!
Dau coroană!!​

Answer 1

Explicație pas cu pas:

a)

$4 \sqrt{3} \times( - 2 \sqrt{3} ) + 26 = 26 - 4 \times 2 \times \sqrt{3} \times \sqrt{3} = 26 - 8 \times 3 = 2$

b)

$8 \sqrt{18} \div ( - 2 \sqrt{2} ) + 10 = 8 \sqrt{9} \times \sqrt{2} \div ( - 2 \sqrt{2} ) + 10 = 24 \sqrt{2} \div ( - 2 \sqrt{2} ) + 10 = 10 - 12 = - 2$

c)

$\sqrt{5} ( \sqrt{5} - 3) + 3 \sqrt{5} = 5 - 3 \sqrt{5} + 3 \sqrt{5} = 5$

d)

$( \sqrt{12} - \sqrt{27} ) \div ( - \sqrt{3}) = \sqrt{3} \times \sqrt{4} - \sqrt{3 } \times \sqrt{9} \div ( - \sqrt{3} ) = \sqrt{3} (2 \times 3) \div ( - \sqrt{3} ) = 6 \sqrt{3} \div ( - \sqrt{3)} = - 6$