Question

if roots of equation 4xsquare -mx +25 = 0 are equal then m= ?​

Answer 1

Answer:

Here , a=4 , b=-m , c=25

If the equation have equal roots then it's Discriminant(D)=0

D=b²-4ac

0=(-m)²-4(4)(25)

0=m²-400

m²=400

m=±20

Step-by-step explanation:

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