Question

1. The value of the expression = x2 – 1 when x = 2 is​

Answer 1

Answer:

1

Step-by-step explanation:

Answer 2

Step-by-step explanation:

x^2 -y^2 = (x+y)(x-y)

2^2 - 1^2 = ( 2 + 1 )( 2- 1)

= 3 × 1

= 3 answer

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