Question

राइट वन वर्ड फॉर मनी वर्ड एनी फाइव​

Answer 1

Explanation:

\huge \sf \underbrace { \: Solution \: }

Solution

Given Equation Is 7x³ + 21x² = 0

By Factorisation Method -

7x³ + 21x² = 0

\sf \rightarrow \: {7x}^{3} + {21x}^{2} = 0→7x

3

+21x

2

=0

\sf \rightarrow \: {7x}^{2} (x + 3) = 0→7x

2

(x+3)=0

Here we find two values of x

\sf \rightarrow \: {7x}^{2} = 0 \: \: and \: \: (x + 3) = 0→7x

2

=0and(x+3)=0

\sf \rightarrow \: {x}^{2} = \frac{0}{7} \: \: and \: \: x = 0 - 3→x

2

=

7

0

andx=0−3

\sf \rightarrow \: {x} = 0 \: \: and \: \: x = - 3→x=0andx=−3

VALUE OF 'X' IS -

\sf \rightarrow \fbox{ \red{\: x = 0 \: \: and \: \: x = - 3}}→

x = 0 and x = - 3