hitunglah panjang Ab atau jarak Ab jika A(-5,-12) dan B(-11,-8)

(x1,y1) = (-5,-12)
(x2,y2) = (-11, -8)
AB^2= (x2-x1)^2 + (y2-y1)^2
=(-11 + 5)^2 + (-8 + 12)^2
= 6^2 + 4^2
= 36 + 16
= 52
panjang AB=√52=√(4 x 13) = 2√13

PANJANG AB = AKAR 4 KUADRAT + 6 KUADRAT
= AKAR 16+36
= AKAR 52
= AKAR 4 X AKAR 13
= 2 AKAR 13