Question

plz answer the question 3, 5,6,7,8....... please follow me
fast ​

Answer 1

thanks for asking the question answer is in the picture

Answer 2

(X+y)(x-y)/100

5)root2(2+1)

3root2

6)5

7)remainder is 2

8)4x^2+y^2+z^2-4xy-2yz+4xz