More expanding brackets: (a - b + c)(a + b - c) = a^2 - (b - c)^2

[Jake101]

I cant see how this works:

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Multiply and simplify the following expression:

. . . . .( a - b + c )(a + b - c )

Answer:

. . . . . a ² - (b - c)²

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[Deleted member 4993]

I cant see how this works:

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Multiply and simplify the following expression:

. . . . .( a - b + c )(a + b - c )

Answer:

. . . . . a ² - (b - c)²

Do you know that:

(x+ y)*(x - y) = x² - y²

 

[stapel]

I cant see how this works:

---

Multiply and simplify the following expression:

. . . . .( a - b + c )(a + b - c )

Answer:

. . . . . a ² - (b - c)²

What did you get, when you multiplied this out and you simplified? Where are you stuck in the process of converting the first expression into the second?

Please be complete. Thank you!