The discriminant of a quadratic equation px² + qx + r=0 is
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a= p
b= q
c=r
D= b²- 4ac
= q² - 4× p× r
= q²- 4pr
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write general form of linear pair of equations in two variables X and Y
ax+by+c=0
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GENERAL FORM:- ax+by+c=0
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Answer:
a= p ,b= q, c= r
d= b²-4 a,c
d= q²-4 p,r
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