Question

factorise the following using identities 36 z power2_ 49 X power 2 chapter 7 factorisation

Answer 1

$36{z}^{2 } - 49{x}^{2} \\ {(6z)}^{2} - {(7x)}^{2} \\ we \: know \: that \\ {a}^{2} - {b}^{2} = (a + b)(a -b ) \\ here \: a = 6z \\ b = 7x \\ (6z + 7x)(6z - 7y) \\ done$
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