Question

Match Column I with Column II in the following:

Column I	Column II
1. The difference of 3 and a number squared	(a) 4 – 2x
2. 5 less than twice a number squared	(b) n2 – 3
3. Five minus twice the square of a number	(c) 2n2 – 5
4. Four minus a number multiplied by 2	(d) 5 – 2n2
5. Seven times the sum of a number and 1	(e) 3 – n2
6. A number squared plus 6	(f) 2(n + 6)
7. 2 times the sum of a number and 6	(g) 7(n + 1)
8. Three less than the square of a number	(h) n2 + 6

Answer 1

Column I	Column II
1. The difference of 3 and a number squared	(e) 3 – n2
2. 5 less than twice a number squared	(c) 2n2 – 5
3. Five minus twice the square of a number	(d) 5 – 2n2
4. Four minus a number multiplied by 2	(a) 4 – 2x
5. Seven times the sum of a number and 1	(g) 7(n + 1)
6. A number squared plus 6	(h) n2 + 6
7. 2 times the sum of a number and 6	(f) 2(n + 6)
8. Three less than the square of a number	(b) n2 – 3

Explanation:

1. Let the number be n
   So, according to the statements, we can write the equation = 3 – n².
2. Let the number be n
   So, the equation is 2n² – 5.
3. Let the number be n
   So, the equation is 5 – 2n².
4. Let the number be x
   So, the equation is 4 – 2x.
5. Let the number be n
   So, the equation is 7(n + 1).
6. Let the number be n
   So, the equation is n² + 6.
7. Let the number be n
   So, the equation is 2(n + 6).
8. Let the number be n
   So, the equation is n² – 3.