A) 4, 4
B) 4, 6
C) 4, - 4
D) 0, 4
Correct Answer: A
Solution :
We have \[abc+2fgh-a{{f}^{2}}-b{{g}^{2}}-c{{h}^{2}}=0\] \[\Rightarrow (3)(-3)(-75)+2(15)(-20)(h)\] \[-3{{(15)}^{2}}-(-3){{(-20)}^{2}}-(-75){{h}^{2}}=0\] \[\Rightarrow 675-600h-675+1200+75{{h}^{2}}=0\]\[\Rightarrow h=4,4.\]You need to login to perform this action.
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