expand 4X2-y2 by using the identities a2-b2
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Step-by-step explanation:
4x²-y²= (4x²) +(y²) -2(4x)(y)
16x²+y²-8xy
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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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