Question

answer the following question..
plz​

Answer 1

Answer:

option d...

Step-by-step explanation:

other ones are algebric laws and multiplied function.. but option d does not show any proper identity

Answer 2

Answer :-

d) a + b = 10 is not a identity.

Explanation :-

a) a² - b² = (a-b) (a+b)

Verification :

$\sf\implies{( a + b)(a - b) } \: \: \: \: \: \: \: \: \: \\ \\ \sf\implies{a(a - b) + b(a - b)} \\ \\\sf\implies{a {}^{2} - ab + ab - b {}^{2} } \: \\ \\ \sf{ \therefore \: a {}^{2} - b {}^{2} }$

b) (a-b) ²= a² - 2ab + b²

Verification :

→ (a-b) (a-b)

→ a(a-b) -b(a-b)

→ a² - ab - ab + b²

→ a² - 2ab + b²

c) a(a+2)= a² + 2a

Verification :

→ a(a+2)

→ a² + 2a

Hence,

Option d) is not a identity.

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