Question

Factorise:-
p^2-16p-4=0​

Answer 1

Answer : p^2 - 16p - 4 = 0

this equation will not be factorise therefore,

we use another method to find the answer .

discriminant =

= b^2 - 4ac

= -16^2 - 4 *1*-4

= 256 + 16

= 256 + 16

= 272

x = -b +_ √b^2 - 4ac

2a

x = -(-16) +_ √ 272

2* 1

x = 16 +_ √ 272

2

x = 8 +_√272

therefore it has two real values

x= 8+ √ 272

or

x= 8 - √ 272