Question

find the of X

one another question for mates ​

Answer 1

we know that ,

$a {}^{m} \times a {}^{n} = a {}^{m + n}$

then,

$\: ( \frac{ - 2}{5} ) {}^{13} \times ( \frac{ - 2}{5} ) {}^{7} = ( \frac{ - 2}{5} ) {}^{5x - 5}$

$\: ( \frac{ - 2}{5} ) {}^{20} = ( \frac{ - 2}{5} ) {}^{5x - 5}$

on comparing,

20= 5x-5

25=5x

then ,

X= 5

⏩ I hope it help you ❤️

Answer 2

$\huge\star\underline{\mathcal\color{brown}{HELLO\:MATE}}\star$

$\color{brown}{HERE\:IS\:YR\:ANS}$

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$\underline\color{Green}{SOL}$

$( \frac{ - 2}{5}){}^{2} \times (\frac{ - 2}{5}){}^{2} = ( \frac{ - 2}{5}){}^{5x - 5}$

SAME POWER

SO

=>2+2=5x-5

=>4+5=5x

x=9/5

$\fbox\color{brown}{HOPE\:IT\:HELPS}$

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$\huge{\mathcal{THANKS}}$

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