Question

if a = 2 and b = – 2 find the value of given expression a) a^2 – b^2​

Answer 1

Answer:

(2)²- (-2)² = 4+4 = 8

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Answer 2

Step-by-step explanation:

a

a 2

a 2 +b

a 2 +b 2

a 2 +b 2 =(2)

a 2 +b 2 =(2) 2

a 2 +b 2 =(2) 2 +(−2)

a 2 +b 2 =(2) 2 +(−2) 2

a 2 +b 2 =(2) 2 +(−2) 2 [Putting a=2,b=−2]

a 2 +b 2 =(2) 2 +(−2) 2 [Putting a=2,b=−2]=4+4=8.