Question

( 2 + a ) ( 2 - a ) direct method to evaluate ​

Answer 1

Answer:

it can be +a-a

Step-by-step explanation:

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Answer 2

$\sf \huge \pink{(2 + a)(2 - a)} \\ \\ \sf \purple{using \: identity \: = (a + b)(a - b) = {a}^{2} - {b}^{2} } \\ \\ \sf \pink{(2 + a)(2 - a) = {(2)}^{2} - {(a)}^{2} } \\ \\ \sf \pink{4 - {a}^{2} }$