Question

(Radical168 + 4•radical21 supra 2 -6•radical14 supra 3)(radical 4intregi si 2supra 3)la puterea -1

Answer 1

(√168 + 4•√21 / 2 -6•√14 /3)(√ 4intregi si 2/ 3)⁻¹=(4√42 + 2•√21  -2•√14 )(√ 14/3)⁻¹=(4√42 + 2•√21  -2•√14 )(√ 3/14)=2√7(2√6+√3-√2)(√3/√14)=2√3•(2√6+√3-√2)/√2=2√3•√2(2√6+√3-√2)/2=√3•√2(2√6+√3-√2)=√6(2√6+√3-√2)