Question

10. Let's apply, (a+b)2 + (a-b)2 = 2(a² + b^)
2.
or ab
or (a+b) - (a-b)2 = 4ab
a + b 2
t
to find the following
2.
(i) Let's find st and (s?+t?) when s +t=12 and s-t = 8
(ii) Let's find 8xy (x2 +y?) when (x + y) = 5 and (x-y) = 1
(iii) Let's find
x2 +y?
when (x + y) = 9 and (x - y) = 5
2xy
(iv) Let's express 36 as the difference of two squares [Hints, 36 = 4x9
4-9
2
2
]
(v) Let's express 44 as the difference of two squares.
(vi) Let's express 8x2 +50y as the sum of two squares.
(vii) Let's express x as the difference of two squares.
2
4+92​

Answer 1

Answer:

१८३८३८३+२८३८३ =2२७४८३२ answer