Question

[Phươc]

 

Answer 1

[456]

\(b,\sqrt{196}-\sqrt{64}+\sqrt{9}\)

\(=14-8+3\)

\(=6+3\)

\(=9\)

`---`

\(d,\sqrt{289}-\sqrt{144}+\sqrt{\left(-3\right)^2}\)

\(=17-12+\sqrt{9}\)

\(=17-12+3\)

\(=5+3\)

`=8`

\(f,\sqrt{1\dfrac{24}{25}}:1,2-2023^0+\left(-\dfrac{1}{3}\right)^2.\sqrt{\left(-3\right)^2}\)

\(=\sqrt{\dfrac{49}{25}}:\dfrac{6}{5}-1+\dfrac{1}{9}.\sqrt{9}\)

\(=\dfrac{7}{5}:\dfrac{6}{5}-1+\dfrac{1}{9}.3\)

\(=\dfrac{7}{6}-1+\dfrac{1}{3}\)

\(=\dfrac{1}{6}+\dfrac{1}{3}\)

\(=\dfrac{1}{2}\)

${color{#B0E0E6}}{\text{Working}}$

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