Answer:
x = -2/3, x = -6
Explanation:
Let's solve the problem,
→ 3x² +20x + 12
→ 3x² + (2x + 18x) + 12
→ 3x(x+6) + 2(x+6)
→ (3x+2)(x+6)
→ x = -2/3, x = -6
Thus, solution is -2/3, -6.
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