Question

1-[2×1/4 + 9/16 : (3/2)^2]
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Answer 1

Resposta:

$\mathrm{Expandir}\:1-\left(2\times \frac{1}{4}+\frac{9}{16}:\left(\frac{3}{2}\right)^2\right):\quad 1-2\times \frac{1}{4}-\frac{9}{16}:\left(\frac{3}{2}\right)^2$

$1-\left(2\times \frac{1}{4}+\frac{9}{16}:\left(\frac{3}{2}\right)^2\right)$

$=1-\left(2\times \frac{1}{4}+\left(\frac{3}{2}\right)^2\frac{9}{16}:\right)$

$-\left(2\times \frac{1}{4}+\frac{9}{16}:\left(\frac{3}{2}\right)^2\right):\quad -2\times \frac{1}{4}-\frac{9}{16}:\left(\frac{3}{2}\right)^2$

$=1-2\times \frac{1}{4}-\frac{9}{16}:\left(\frac{3}{2}\right)^2$

$-2\times \frac{1}{4}-\frac{\frac{9}{16}}{\left(\frac{3}{2}\right)^2}$

$1-2\times \frac{1}{4}-\frac{\frac{9}{16}}{\left(\frac{3}{2}\right)^2}=\frac{1}{4}\quad \left(\mathrm{Decimal:\quad }\:0.25\right)$