Question

45) Simplify using suitable Identities:
a) (4p +3q)2
b) 982
c) (1.02)2 - (0.98)2
d) 297 × 303
46) Evaluate
a)
9
3×27×t
4

3
2×6
3×t
2
b)
3
5×105×25
6
5×5
7
47) (a) By what number rational should −15
56
be divided to get −5
7

(b)The sum of two rational numbers is 5
18
if one of the numbers is 1
8
,

find the other number.
48) (a) Two numbers are in the ratio 5:3. If they differ by 18, what are the
numbers?
(b) Rohan is twice as old as Sam. Five years ago Rohan’s age was three
times Sam’s age. Find their present ages.
49) (a)Find the least number which must be subtracted from 2361 to
make it a perfect square.
(b) Find the least square number that is divisible by each of the
numbers 16,18 and 45.

Answer 1

Answer:

please write again very properly