Question

factorise a²-14ab +49b²​

Answer 1

Answer:

${a}^{2} - 14ab + 49 {b}^{2} \\ {(a + 7b)}^{2}$

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Answer 2

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a² + 49b² - 14 ab

→ a² + (7b)² - 2 × a × 7b

→ ( a - 7b )²

→ ( a - 7b ) ( a - 7b )