Question

If the equation 4x2 + x (p+1) + 1 = 0 has exactly two equal roots, then one
of the values of p is
(co
(0)3​

Answer 1

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Answer 2

For two equal roots

D= 0

b^2-4ac

(p+1)2-4*4*1

p^2+2p+1-16=0

p^2+2p-15=0

p ^2+5p-3p-15=0

p(p+5)-3(p+5)=0

(p+5)(p-3)=0

(p-3)=0

p=3