Find the value of k so that quadratic equation have equal roots x2 - 4x + k = 0
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Answer:
4
Step-by-step explanation:
For quadratic equation
axsquare+box+c=0
to have rootsD=b square-4ac=0
therefore D=bsquare-4ac=(-4)square-4(1)(k)=0
k=4
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