if x = 3 is a solution of quadratic equation px² - 8 x- p =zero then find the value of p
urgent please ans
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Answered by
12
Heya !!
P(X) = PX² - 8X- P
P(3) = P × (3)² - 8 × 3 - P
=> 9P - 24 - P = 0
=> 8P = 24
=> P = 3
Hope it will help you :-)
P(X) = PX² - 8X- P
P(3) = P × (3)² - 8 × 3 - P
=> 9P - 24 - P = 0
=> 8P = 24
=> P = 3
Hope it will help you :-)
tarunakhandelwal:
i have doubt on your 3rd step
3²= 9 then why have you written 3?
Sis!! can you solve my question on my profile in the first question? It is based on Elimination method
Answered by
8
px² - 8 x- p = 0
putting value of x ...
9p - 24 - p =0
8p = 24
p = 3
this is is your answer
putting value of x ...
9p - 24 - p =0
8p = 24
p = 3
this is is your answer
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