expand (x-y=3) ^2 with formulae
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Answer:
বাংলা নবজাগরণ তৎকালীন সমাজ ব্যবস্হারপরির্বতনে প্রতিনিধিত্বকারী বিভিন্ন ব্যক্তির গুরুত্বপুণর্ অবদান বণর্ণা কর
Answered by
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Solution:
(x - y = 3)^2
After adding the 0 terms solutions, we get
= 0
But if this case....
Solution:
(x - y)^2 = 3
Solving 1st part (x - y)^2
Using the identity,
(A-B)^2 = A^2 - 2AB + B^2
Here A = x, B = y
= (x)^2 - 2(x)(y) + (y)^2
= x^2 - 2xy + y^2
Solving 2nd part
= 3
After adding the 2 terms solutions, we get
(x^2 - 2xy + y^2) - 3 = 0
= x^2 - 2xy + y^2 - 3
Hope this will help.
(x - y = 3)^2
After adding the 0 terms solutions, we get
= 0
But if this case....
Solution:
(x - y)^2 = 3
Solving 1st part (x - y)^2
Using the identity,
(A-B)^2 = A^2 - 2AB + B^2
Here A = x, B = y
= (x)^2 - 2(x)(y) + (y)^2
= x^2 - 2xy + y^2
Solving 2nd part
= 3
After adding the 2 terms solutions, we get
(x^2 - 2xy + y^2) - 3 = 0
= x^2 - 2xy + y^2 - 3
Hope this will help.
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