Math, asked by bepratim, 3 months ago

a-b=4
a3-b3=88
a2-b2=?​

Answers

Answered by satyamupadhyay63
0

Answer:

Step-by-step explanation:

a3 – b3 = (a – b)(a2 + ab + b2)

56 = 2(a2 + ab + b2)

28 = (a2 + ab + b2)      ----(1)

Now, (a – b)2 = a2 – 2ab + b2 = 4      ----(2)

Solving equation (1) and (2),

a2 + ab + b2 = 28

a2 – 2ab + b2 = 4

3ab = 24

ab = 8

Therefore, a2 + 8 + b2 = 28 in (1)

And a2 + b2 = 28 – 8 = 20

Answered by dakshinadakshina10
0

Step-by-step explanation:

ए स्क्वायर प्लस बी स्क्वायर इज इक्वल टू 8 - 8 इज इक्वल टू

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