if the quardratic equation (k-3)x2 + 4(k-3)x +4=0 has real and equal roots find the value of k
Answers
Answered by
70
For equal roots ,
- a = k-3
- b = 4(k-3)
- c = 4
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Answered by
0
Answer:
4
Step-by-step explanation:
a=k-3
b=4(k-3)
c=4
b²-4ac=0
b²=4ac
16(k-3)(k-3)=4(k-3)(4)
16(k-3)(k-3)=16(k-3)
16(k-3) get cancelled on both sides
k-3=1
k=4
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