Question

$\sqrt{ \frac{81}{4} } - \sqrt{400} + \sqrt{2.25}$

Answer 1

Vou resolver um por um depois junto.

$\sqrt{\frac{81}{4}}= \frac{\sqrt{81}}{\sqrt{4}}=\frac{9}{2}= 4,5\\\\\\\sqrt{400} = \sqrt{100 * 4} = \sqrt{100} * \sqrt{4} = 10* 2= 20\\\\\\2,25= 9/4\\\sqrt{\frac{9}{4}} =\frac{\sqrt{9}}{\sqrt{4}}= \frac{3}{2} = 1,5$

4,5-20+1,5

Resposta= -14