Jawaban:
(3x – 2)^2 = x^2 + (2x + 2)^2
9x^2 – 12x + 4 = x^2 + 4x^2 + 8x + 4
9x^2 – 12x + 4 = 5x^2 +8x + 4
9x^2 – 5x^2 = 8x + 12x + 4 – 4
4x^2 = 20x
—————
x
4x = 20
x = 20/4
x = 5
(i) x = 5
(ii) 2x + 2
2 . 5 + 2
10 + 2
= 12
(iii) 3x – 2
3 . 5 – 2
15 – 2
= 13
nilai bilangannya adalah
5 , 12 dan 13