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標題:
Quadratic Equations
發問:
Find the value of k if the following expressions is a perfect square: (i) x^2 - 4x + 3k (ii) kx^2 - x/2 + 12
最佳解答:
Find the value of k if the followingexpressions is a perfect square: (i) x^2－4x+3k Sol D=(－4)^2－4*1*(3k)=0 16－12k=0 k=16/12=4/3 (ii) kx^2－x/2+12 Sol D=(－1/2)^2－4*k*(1/2)=0 1/4－2k=0 k=1/8
其他解答:
Quadratic Equations
發問:
Find the value of k if the following expressions is a perfect square: (i) x^2 - 4x + 3k (ii) kx^2 - x/2 + 12
最佳解答:
Find the value of k if the followingexpressions is a perfect square: (i) x^2－4x+3k Sol D=(－4)^2－4*1*(3k)=0 16－12k=0 k=16/12=4/3 (ii) kx^2－x/2+12 Sol D=(－1/2)^2－4*k*(1/2)=0 1/4－2k=0 k=1/8
其他解答:
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