Question

For what value of m will the equation x2 - 2mx + 7m - 12 = 0 have equal roots?

Answer 1

Answer:

m=3 or 4

Step-by-step explanation:

It means b²-4ac will be 0.

Hence, 4m²-4*1*(7m-12)=0.

m²-7m+12=0

(m-4)(m-3)=0

m=3 or 4

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