Question

find the value of the expression a2-b2 for a=2,b=1​

Answer 1

Answer:

3

Step-by-step explanation:

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

(a + b) (a - b)

(2 + 1) (2 - 1)

(3)(1)

3

Answer 2

Step-by-step explanation:

our expression is a²–b² and a=2, b=1

= so (a+b)(a–b)

= (2+1)(2–1)

= 3×1

=3

so answer is 3

I HOPE IT IS HELPFUL FOR YOU...