Question

20. Simplifique a expressão e fatore a
(x - 6)² + (x + 6).(x - 6) + (x + 6)²

Alternativas:
a) 4(x + 9) b) 4(x ²- 9)
c) 3(x²- 12) d) 3(x² + 12)

Answer 1

(x - 6)² + (x + 6).(x - 6) + (x + 6)²

x²-12x+36 + x²-36 + x²+12x+36

3x² + 36

3(x² +12) ==> d)