Question

factorise the following a (p + q)^2- 81​

Answer 1

Step-by-step explanation:

${(p + q)}^{2} - 81$

$= {(p + q)}^{2} - {(9)}^{2}$

$= (p + q + 9)(p + q - 9)$

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Answer 2

Answer:

» (p + q)² - 81

= (p + q)² - 9²

= (p + q + 9) (p + q - 9)