Question

que 42

koi bhi method two root nikal do

quadratic formula , factorize , completing the squre
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Answer 1

Answer:

x²+5x-(a²+a-6)=0

a=1 b=5 c=-(a²+a-6)

D=b²-4ac=(5)²-4(1)(-(a²+a-6))=25+4a²+4a-24=4a²+4a+1

4a²+4a+1=4a²+2a+2a+1=2a(2a+1)+1(2a+1)=(2a+1)(2a+1)

=(2a+1)²

x=-b+✓D/2a or -b-✓D/2a

=-5+✓(2a+1)²/2 or -5-✓(2a+1)²/2

=-5+2a+1/2 or -5-2a-1/2

=-4+2a/2 or -6-2a/2

=a-2 or -3-a

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