Question

1)$factorize \\ 27m {}^{3} - 216n {}^{3}$

2)$expand \: (7 + m {}^{2} )$
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Answer 1

Answer:

1. 27(m³ - 8n³)

2. m⁴ + 14m² + 49

Step-by-step explanation:

1. 27(m³ - 8n³)

.

2. (7 + m²)

Formula:

(a+b)² = a² + b² +2ab

.

(7)² + (m²)² + 2×7×m²

49 + m⁴ + 14m²