Question

va rog, ajutați-ma!!!​

Answer 1

b)$\sqrt{7^{4}*45+7^{4}*39-7^{4} *3 }$ dam factor comun $7^{4}$

$\sqrt{7^{4}(45+39-3) } = \sqrt{7^{4}*81 } = 7^{2} + 9 = 58$

c)$\sqrt{5^{2}*11+19*5^{2} + 5^{2} * 6}$ dam factor comun $5^{2}$

$\sqrt{5^{2}(11+19+6) } = \sqrt{5^{2}*36 } = 5*6 = 30$