Question

4. Answer the following questions.
(4 x 2 = 8 marks)
a) The sum of squares of first n natural numbers is given by n(n+1)(2n-1). Find the
sum of squares of the first 10 natural numbers.
b) Add a² + 3ab-bc, b' + 3bc - ca, and c2 + 3ca - ab.
c) Subtract x*-+ y + 3x2y2 - 7xy" from xy + y + 3x2y2 - xya
d) Find x for the equation given below using the transposing method.
Bx
x + 7 -


Please give answer of all questions​

Answer 1

Answer:

a)2090 b)

Step-by-step explanation:

a) n=10

n(n+1)(2n-1)

10(10+1)(2*10-1)

110*19

2090ans.