Question

Find the cube root of -1331 X 343

Answer 1

= -1331 X 343
= √-11 * -11 * -11 * √7 * 7 * 7
= -11 * 7
= -77.

Answer 2

Concept

Cube root

The factor that we multiply by itself three times to generate a number is called the cube root.

Given

The mathematical expression $-1331\times 343$.

Find

We have to find the cube root of given expression.

Solution

First, write the expression in cube root.

$\sqrt[3]{-1331 \times 343}$

Now rewrite the expression.

$\sqrt[3]{-11 \times-11 \times-11\times7\times7\times7}$

then

$\sqrt[3]{-11 \times-11 \times-11\times7\times7\times7}=-11\times7$

                                                $=-77$

Hence the final answer is -77.