Question

please solve all of this I will surely mark you as brainlist and follow you​

Answer 1

Step-by-step explanation:

(viii) 2x^2-3-x

if it is correct then please make me brainlist

Answer 2

Step-by-step explanation:

1)

$\frac{ \frac{3}{7}z - \frac{1}{2} }{z - \frac{1}{4} } - \frac{3}{14} = \frac{1}{7} \\ \frac{ \frac{6z - 7}{14} }{ \frac{4z - 1}{4} } = \frac{1}{7} + \frac{3}{14} \\ \frac{6z - 7}{14} \times \frac{4}{4z - 1} = \frac{2 + 3}{14} \\ \frac{4(6z - 7)}{14(4z - 1)} = \frac{5}{14} \\ \frac{24z - 28}{4z - 1} = 5 \\ 24z - 28 = 5(4z - 1) \\ 24z - 28 = 20z - 5 \\ 24z - 20z = 28 - 5 \\ 4z = 23 \\ z = \frac{23}{4}$

2)

$\frac{p - \frac{2}{5} }{p + \frac{2}{5} } = 5 \\ \frac{ \frac{5p - 2}{5} }{ \frac{5p + 2}{5} } = 5 \\ \frac{5p - 2}{5p + 2} = 5 \\ 5p - 2 = 5(5p + 2) \\ 5p - 2 = 25p + 2 \\ 5p - 25p = 2 + 2 \\ - 20p = 4 \\ p = - \frac{4}{20} \\ p = - \frac{1}{5}$