Question

Ajutați.ma va rog frumos la exercițiile incercuite. Dau coroana! Repede!!!!

Answer 1

$5.a) =(x \sqrt{3}- \sqrt{2})^{2} \\ \\ b)=(x \sqrt{3}- \sqrt{5}) ^{2} \\ \\ c)=(2x+ \sqrt{3}) ^{2} \\ \\ d)=(x \sqrt{5} +2})^{2} \\ \\ e)=(x+ \sqrt{2})^{2} \\ \\ f)=(x- \frac{1}{3})^{2} \\ \\ g)= ( \frac{1}{3} x+2)^{2} \\ \\ h)=( \frac{2}{3}x+ \frac{3}{4})^{2} \\ \\ i)=( \frac{2}{5}x+ \frac{5}{2})^{2}$

6.
$a^{2}- b^{2}=(a-b)(a+b)$

$a)9x^{2} -5=(3x- \sqrt{5})(3x+ \sqrt{5})$