18. Expand : (a-b+c)2
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Answer: 2a-2b+2c
Step-by-step explanation:
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Step-by-step explanation:
❤️✨expand of (a ± b ± c)2✨❤️
:::::We will discuss here about the expansion of (a ± b ± c)2.
(a + b + c)2 = {a + (b + c)}2 = a2 + 2a(b + c) + (b + c)2.
= a2 + 2ab + 2ac + b2 + 2bc + c2.
= a2 + b2 + c2 + 2(ab + bc + ca)
✨()()Therefore, (a – b + c)2 = a2 + b2 + c2 + 2(ac – ab – bc)
Similarly for (a – b – c)2, etc.
Solved Examples on Expansion of (a ± b ± c)2.
✨hence proved✨
❤️❤️. ✨. ❤️❤️
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