Question

Q3. The product of (3 + √2)(3 − √2) is equal to (a) 7 (b) -7 (c) 1 (d) -1​

Answer 1

Answer:

7

Step-by-step explanation:

(a+b)(a-b)

=a^2-b^2

3^2-(underroot 2)^2

=9-2

7