Answers

2016-01-26T00:11:52+05:30
√(7+5)*(7+5)+(2-3)*(2-3)
=√144+1
=12.04 Unit is answers
0
2016-01-26T13:51:41+05:30
X₁= -5,x₂=7,y₁=3,y₂=2
PA=PB
⇒√[-5-x]²+[3-y]² =√[7-x]²+[2-y]²
⇒√25+x²-10x +9+y²-6y =√49+x²-14x +4+y²-4y
⇒25+x-10x+9+y-6y=49+x-14x+4+y-4y
⇒25-49 +x-x -10x+14x+y-y-6y+4y+9-4
⇒-24+4x-2y +5=0
⇒-19+4x-2y=0
-⇒4x+2y=19
4y-2y=19

4 4 4