Question

solve this please fast

Answer 1

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Answer 2

$= p(x) = {5 {x}^{3} - {x}^{2} + 4x + b }$

$1 - 5x = 0 \\ 5x = - 1 \\ x = \frac{ - 1}{5}$

$= p( \frac{ - 1}{5}) = 5( { \frac{ - 1}{5} )}^{3} - {( \frac{ - 1}{5})}^{2} + 4( \frac{ - 1}{5}) + b$

$= - \frac{ 1}{25} + \frac{ 1}{25} - \frac{4}{5} + b$

$(since \: is \: divisible \: by \: it \\ \: so \: it \: is \: equal \: to \: 0)$

$- \frac{ 4}{5} + b = 0$

$b = \frac{4}{5}$

$..hope \: you \: go \: it.$