Datrys B=sqrt{28}-5sqrt{12}

$$B = \sqrt { 28 } - 5 \sqrt { 12 }$$

Datrys ar gyfer B

$$B=2\left(\sqrt{7}-5\sqrt{3}\right)\approx -12.029005454$$

Camau ar gyfer Datrys Hafaliad Llinol

Ffactora 28=2^{2}\times 7. Ailysgrifennu ail isradd y lluoswm \sqrt{2^{2}\times 7} fel lluoswm ail israddau \sqrt{2^{2}}\sqrt{7}. Cymryd isradd 2^{2}.

$$B=2\sqrt{7}-5\sqrt{12}$$

Ffactora 12=2^{2}\times 3. Ailysgrifennu ail isradd y lluoswm \sqrt{2^{2}\times 3} fel lluoswm ail israddau \sqrt{2^{2}}\sqrt{3}. Cymryd isradd 2^{2}.

$$B=2\sqrt{7}-5\times 2\sqrt{3}$$

Lluosi -5 a 2 i gael -10.

$$B=2\sqrt{7}-10\sqrt{3}$$

Neilltuo B

$$B≔2\left(\sqrt{7}-5\sqrt{3}\right)$$