Question

Socoate factorii de sub radical
a)√72 b)√48 c)√75

Answer 1

Răspuns:

$\sqrt{72} = \sqrt{ {6}^{2} \times 2 } = 6 \sqrt{2}$

$\sqrt{48} = \sqrt{ {2}^{4} \times 3} = {2}^{2} \sqrt{3} = 4 \sqrt{3}$

$\sqrt{75} = \sqrt{ {5}^{2} \times 3 } = 5 \sqrt{3}$

Answer 2

a) √72=√(6²×2)=6√2

b) √48=√(4²×3)=4√3

c) √75=√(5²×3)=5√3