If (Ksqrt{28}+sqrt{63}-sqrt{7}=0), find K.
-
A.
-2 -
B.
-1 -
C.
1 -
D.
2
Correct Answer: Option B
Explanation
(Ksqrt{28}+sqrt{63}-sqrt{7}=0\
2Ksqrt{7}+3sqrt{7}-sqrt{7}=0\
2Ksqrt{7}=-2sqrt{7}\
K=frac{-2sqrt{7}}{2sqrt{7}}\
K=-1)
If (Ksqrt{28}+sqrt{63}-sqrt{7}=0), find K.
(Ksqrt{28}+sqrt{63}-sqrt{7}=0\
2Ksqrt{7}+3sqrt{7}-sqrt{7}=0\
2Ksqrt{7}=-2sqrt{7}\
K=frac{-2sqrt{7}}{2sqrt{7}}\
K=-1)