Question

19. Find the square by using the identities.
(a -5)²​

Answer 1

Answer:

• Here ( a - 5 )² is given

Therefore we will use identity of ( a - b )²

$( \: a \: - \: b \: )^{2} = \: a^{2} - 2ab \: + \: b^{2}$

Therefore,

• ( a - 5 )² = (a)² - 2(a)(5) + (-5)²
• a² - 10a + 25

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