Question

x= 2 radical 63+ 3 radical 28 radical 175 ​

Answer 1

Răspuns:

x=2✓63+3✓28✓175

✓2 la puterea a 2 • 63+✓3 l puterea a 2 • 28✓175

✓252+✓252+✓175=✓679

Coroana+cel mai inteligent răspuns

Answer 2

Răspuns: $\boxed{x = 7\sqrt{7} }$

Explicație pas cu pas:

$x = 2\sqrt{63} +3\sqrt{28} -\sqrt{175}$

$x = 2\sqrt{3^{2}\cdot7} +3\sqrt{2^{2}\cdot 7} -\sqrt{5^{2}\cdot 7}$

$x = 2\cdot3\sqrt{7} +3\cdot2\sqrt{ 7} -5\cdot\sqrt{ 7}$

$x = 6\sqrt{7} +6\sqrt{ 7} -5\sqrt{ 7}$

$x = 12\sqrt{7} -5\sqrt{ 7}$

$\boxed{x = 7\sqrt{7} }$