Question

2. Introduceți factorii sub radical: a) 2√2; 9√2; 17√2; 19√2; 21√2; 3√3;​

Answer 1

Explicație pas cu pas:

2√2=

$\sqrt{2 {}^{2}x2 } = \sqrt{4x2} = \sqrt{8}$

9√2=

$\sqrt{9} {}^{2} x2 = \sqrt{81x2} = \sqrt{162}$

17√2

$\sqrt{17 \times 2} {}^{2} = \sqrt{289 \times 2} = \sqrt{578}$

19√2=

$\sqrt{19 {}^{2} \times 2} = \sqrt{361 \times 2 } = \sqrt{722}$

21√2=

$\sqrt{21 {}^{2} } \times 2 = \sqrt{441 \times 2} = \sqrt{882}$

3√3=

$\sqrt{3 {}^{2} } \times 3 = \sqrt{9 \times 3} = \sqrt{27}$