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Cubes and Cube Roots — MATHS STD 8 — Question

ICSE BoardEnglish MediumSTD 8MATHSCubes and Cube Roots4 Marks
Question
Find the cube$-$root of $- 15.625.$
✓

Answer

$ -15.625$
$ =\sqrt[3]{\frac{-15625}{1000}}$
$ =\sqrt{\frac{-(5 \times 5 \times 5) \times(5 \times 5 \times 5)}{10 \times 10 \times 10}}$
$ =\frac{-5 \times 5}{10}$
$ =\frac{-25}{10}$
$ =-2.5$
$5$ $15625$
$5$ $3125$
$5$ $625$
$5$ $125$
$5$ $25$
$5$ $5$
  $1$

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