Question

factorise=63a2-112b2​

Answer 1

Step-by-step explanation:

Using identity:

${a}^{2} - {b}^{2} = (a - b)( a+b) \\ 63 {a}^{2} - 11 {b}^{2} = ( \sqrt{63} a - \sqrt{11} b)( \sqrt{63} a + \sqrt{11} b)$

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Answer 2

Answer:

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