Algebra

Quantitative Aptitude (CHSL)

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(x⁴ + 5x³ + 6x²) is equal to :

x(x + 3)(x² + 2)

x² (x + 3)(x + 2)

x²(x – 2)(x – 3)

x(x² + 3)(x + 2)

Explanation:

(x⁴ + 5x³ + 6x²)
= x²(x² + 5x + 6)
= x²(x² + 3x + 2x + 6)
= x²(x + 3)(x + 2).

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