Question

please tell me the answer of this question​

Answer 1

Answer:

iii).

(3p³q+ 2p²q + 7) + (2p²q + 4pq - 2p³q) = 3p³q - 2p³q + 2p²q + 2p²q + 4pq+7

= p³q+ 4p²q+ 4pq + 7

v)

2x + y = 5. eqn 1

3x - y = 5. eqn 2

Adding I and II

5x = 10

» X = 2

Putting the value of x in (1)

2 x 2 + y = 5

4 + y = 5

y = 1

i).

Set = {1,2,3,4} Subsets: {} (empty set) {1} , {2}, {3}, {4}, {1,2}, {1,3), {1,4}, {2,3}, {2,4), {3,4},

{1,2,3}, {1,2,4}, {1,3,4}, {2,3,4}, {1,2,3,4}

Answer 2

Answer:

1st :- above attachment

3rd :- 2nd attachment ⬆️

4th :-

$\sqrt{5} \div 3 = 3 \div \sqrt{7 } \\ \\ \sqrt{5} \times \ \sqrt{7} = 3 \times 3 \\ \\ \sqrt{35} = 9 \\ \\ \sqrt{35} < 9$

5th :- 2x+y=5 ----- eq 1

3x-y=5 ------ eq 2

Adding eq 1 and eq 2 , we get

5x=10

=> x=2

Now put the value of x in eq 1

2×2+y=5

=> y=1

Hope it will help you