Sagot :
Answer:
the length of each chords are 780 and 840.
Step-by-step explanation:
remember: intersecting chords. a1 a2=b1 b2
given:
chord 1: x+2, x+6
chord 2: x-4, x+18
let a1 be x+2
let a2 be x+6
let b1 be x-4
let b2 be x+18
a1 a2 = b1 b2
(x+2)(x+6) = (x-4)(x+18)
x²+6x+2x+12 = x²+18x-4x-72
x² + 8x + 12 = x² + 14x - 72
12+72 = x²-x² + 14x-8x
84 = 6x
24 = x
chord 1:
(x+2)(x+6)
(24+2)(24+6)
(26)(30)
780
chord 2:
(x-4)(x+18)
(24-4)(24+18)
(20)(42)
840