Question by Donald Trump - Discuss with MathYouLike

Donald Trump

20/03/2017 at 11:24

It is given that (a + b + c) is an add number. Show that (a + b + c) \(\times\)(a - b + c) is also an odd number.

Even and Odd Numbers

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FA KAKALOTS 09/02/2018 at 22:08

a + b + c is odd ; 2b is even,so a + b + c - 2b is odd

=> a - b + c is odd => (a + b + c)(a - b + c) is odd
Phan Thanh Tinh Coordinator 23/04/2017 at 08:26

a + b + c is odd ; 2b is even,so a + b + c - 2b is odd

=> a - b + c is odd => (a + b + c)(a - b + c) is odd

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