Question

please answer dedo merko nahi aa raha please ​

Answer 1

Answer:

-1/2 -1/4 -1/5 is the required descending order

Answer 2

$5. Write \: in \: descending \: order$

$\frac{ - 1}{4} , \frac{ - 1}{2} , \frac{ - 1}{5}$

$= LCM of 4, 2 \: and \: 5 \: is \: 20$

$= \frac{ - 1 \times 5}{4 \times 5} , \frac{ - 1 \times 10}{2 \times 10} , \frac{ - 1 \times 4}{5 \times 4}$

$= \frac{ - 5}{20} , \frac{ - 10}{20} , \frac{ - 4}{20}$

$descending \: order \: - \frac{ - 1}{2} , \frac{ - 1}{4} , \frac{ - 1}{5}$

$6.subtract$

$5mn + 3ab + 4x {}^{2} \: from \: 5x {}^{2} - 4ab + mn$

$= 5 {x}^{2} - 4ab + mn - 5mn + 3ab + 4x {}^{2}$

$= 9x {}^{2} - ab - 4mn$