Question

find the value of the following expressions for a=3 and b=1 a² -2ab +b²​

Answer 1

Step-by-step explanation:

= 3² - 2 x 3 x 1 + 1²

= 9 - 6 + 1

= 4

Answer 2

Answer:

4

Step-by-step explanation:

since a² -2ab +b²= (a-b) ²

therefore (a-b) ²=(3-1)²

hence (a-b) ²=(2)²

since 2²=2*2=4

therefore (a-b) ²=4