Question

solve it step wise.......​

Answer 1

$f(3) > 0 \: \: and \: discriminant > = 0$

9+6(a-1)+a+5>0

9+6a-6+a+5>0

7a+8>0a>-8/7 -----------♡

and

$4(a - 1) {}^{2} - 4(a + 5) > = 0$

${a}^{2} - 2a + 1 - a - 5 > = 0$

${a}^{2} - 3a - 4 > = 0$

$(a - 4)(a + 1) > = 0$

$a < = - 1 \: or \: a > = 4 \: \: \: \: \: ....$

option c is correct