Question

if 5is a root of x²-(p-1)x+10=0 then the value of p is ​

Answer 1

Answer:

$25 - (p - 1)5 + 10 = 0 \\ 35 - 5p + 5 = 0 \\ 40 = 5p \\ p = 8$

Answer 2

Answer:

√39

Step-by-step explanation:

b²-4ac=0

-(p-1)²-4(1)(10)=0

p²+1-40=0

p²=0+40-1

p²=39

p=√39