write the following in the expanded form -4a3 b2
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Answer:
-4 x (a+a+a) x (b+b)
Step-by-step explanation:
Hope this helps you........
Answered by
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Answer:
Step-by-step explanation:
= a2 - 2ab + b2. Therefore, (a + b)2 + (a - b)2. = a2 + 2ab + b2 + a2 - 2ab + b2.
= 2(a2 + b2), and. (a + b)2 - (a - b)2. = a2 + 2ab + b2 - {a2 - 2ab + b2}
= 4ab. Corollaries: (i) (a + b)2 - 2ab = a2 + b2.
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