Jawapan

  • Pengguna Brainly
2015-10-26T18:00:04+08:00
2015-10-27T17:10:01+08:00
M1 = (y-0) / (x+2)
m1 = y / (x+2)

m2 = (y+7) / (x-5)

m1m2 = -1
m1 = -1/m2
y/(x+2) = -1/ [(y+7)/(x-5)
y/(x+2) = - (x-5)/(y+7)
y/(x+2) = (5-x)/(-y-7)
y(-y-7) = (5-x)(x+2)
-y²-7y = -x²+3x+10
y²+7y = x²-3x-10

so, the equation of the locus of the moving point of Q is y²+7y = x²-3x-10