Find K, if Kx2 + 3x − 28 = 0. If x = 4 is one of the root of quadratic equation.
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Answer:
11/2
Step-by-step explanation:
kx2+3x-28=0
x=4
so,k*2*2+3*2-28=0
4k+6-28=0
4k-22=0
4k=22
k=22/4
k=11/2
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