find
distance
between point L(x,7) and m(1,15) is 10
Answers
Answered by
1
Distance between LM=10
LM=
(x−1)
2
+(7−15)
2
=10
⇒
(x−1)
2
+(−8)
2
=10
(x−1)
2
+64
=100
Squaring both sides
(x−1)
2
+64=100
⇒x
2
−2x+1+64=100
⇒x
2
−2x−35=0
⇒x(x−7)+5(x−7)=0
⇒(x+5)(x−7)=0
⇒x=−5,7
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Answered by
2
answer is 7 & -5 ,
hope it will help you
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