Question

Find the value of the expression a? – b2 for a = 2 and b=1

Answer 1

Answer:$a^2-b^2=3$

Step-by-step explanation:

We need to find the value of the below expression i.e.

$a^2-b^2$ when a = 2 and b = 1.

So,

Put a = 2 and b = 1 in the above expression. So,

$a^2-b^2=(2)^2-1^2\\\\=4-1\\\\=3$

Hence, the value of the expression is equal to 3.