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(7a - 8b) × (7a - 8b) = (?)
Given: (7a - 8b) × (7a - 8b)
To find: We have to find the value of (7a - 8b) × (7a - 8b)
Solution:
(7a - 8b) × (7a - 8b)
= (7a - 8b)2
= (7a)2 - 2(7a)(8b) + (8b)2
= 49a2 - 112ab + 64b2
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