Question

under what condition the quadratic equation px2^+qx+r have equal roots ​

Answer 1

Answer:

if D=0

Step-by-step explanation:

D=b

${b }^{2} - 4ac$

Answer 2

Answer:

Given a quadratic equation p$x^2$ + qx + r.

So we know that if the dicriminant of the quadratic equation is equal to zero, the equation will have equal roots.

The discriminant is equal to $b^{2}$ - 4ac (In an equation a$x^2$ +bx + c).

So in this case:

p represents a

q represents b

and r represents c

So $q^{2}$ - 4pr = 0 is the condition for which the given equation will have equal roots.

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