plz any one give answer of this.
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2x^2+px-15=0
sub -5 in above
2(-5)^2 +p(-5)-15=0
50-5p-15=0
5p=35
p=7
given p(x^2 + x) +k=0
7(x^2 +x) +k=0
7x^2+7x+k=0
alpha+beta= -1
2alpha=-1
alpha=-1/2,beta=-1/2
alphabeta =k/7
1/2×1/2=k/7
1/4=k/7
k=7/4 is answer obtained
sub -5 in above
2(-5)^2 +p(-5)-15=0
50-5p-15=0
5p=35
p=7
given p(x^2 + x) +k=0
7(x^2 +x) +k=0
7x^2+7x+k=0
alpha+beta= -1
2alpha=-1
alpha=-1/2,beta=-1/2
alphabeta =k/7
1/2×1/2=k/7
1/4=k/7
k=7/4 is answer obtained
Aryankhunteta:
thanks for this
ok
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