Question

Ba va rog sunt clasa a VII A va rog am pml​

Answer 1

Răspuns:

Salutare !

$a)x = 5 \sqrt{12} - \sqrt{75} - 2 \sqrt{27}$

$x = 10 \sqrt{3} - 5 \sqrt{3} - 6 \sqrt{3}$

$x = - \sqrt{3}$

$y = 5 \sqrt{24} - 3 \sqrt{54} - \sqrt{150}$

$y = 10 \sqrt{6} - 9 \sqrt{6} - 5 \sqrt{6}$

$y = - 4 \sqrt{6}$

$x \times y = - \sqrt{3} \times ( - 4 \sqrt{6} )$

$x \times y = 4 \sqrt{18} = 12 \sqrt{2}$

$b)x = \sqrt{54} + 4 \sqrt{24} - 2 \sqrt{150}$

$x = 3 \sqrt{6} + 8 \sqrt{6} - 10 \sqrt{6}$

$x = \sqrt{6}$

$y = \sqrt{18} - 5 \sqrt{72} + 3 \sqrt{98}$

$y = 3 \sqrt{2} - 30 \sqrt{2} + 21 \sqrt{2}$

$y = - 6 \sqrt{2}$

$x \times y = 12 \sqrt{2} \times \sqrt{6}$

$x \times y = 12 \sqrt{12}$

$x \times y = 24 \sqrt{3}$