plz do question - 2 , 6 , 11 ..... please it is very important
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2). if x=-1
px^2+3x+q=0
p-3+q=0
p=3-q
x=-2
4p-6+q=0
4(3-q)-6+q=0
12-4q-6+q=0
6-3q=0
3q=6
q=2
p=3-q
p=3-2
p=1
p-q=1-2=-1
px^2+3x+q=0
p-3+q=0
p=3-q
x=-2
4p-6+q=0
4(3-q)-6+q=0
12-4q-6+q=0
6-3q=0
3q=6
q=2
p=3-q
p=3-2
p=1
p-q=1-2=-1
harsh872:
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