Question

if one is a zero of quadratic polynomial ax2-3(a-1)x-1, find the value of a​

Answer 1

Answer:

$\huge\fcolorbox{blue}{pink}{☃αղsաҽɾ☃}$

$\underline \bold{Given} = 1 \: is \: its \: 0$

$⇒ \: p(x) = a ^{2} -3(a-1)x-1 = 0 \\ \\⇒ \: a - 3a + 3 - 1 = 0 \\ \\ ⇒ \: - 2a + 2 = 0 \\ \\ ⇒ \: - 2a = - 2 \\ \\ ⇒ \: a = \frac{ - 2}{ - 2 } \\ \\ ⇒ \: a = 1$