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Prove algebraically that y=x^2-4 is

If a and b are positive integers, prove that:ab = gcd(a,b)*lcm(a,b). Can visualize this being true and easily create examples
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2. asked by Rom
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Prove algebraically that |w+z|<=|w|+|z| for any complex numbers w and z.
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2. asked by Josh
3. 450 views
prove (a) A(+B)=AB & (b) A+B=A+B both algebraically and using the truth table.
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2. asked by Traxx
3. 432 views
Prove algebraically that y=x^2-4 is symmetric with the y-axis.Please help! Thanks
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2. asked by Bree
3. 706 views
Prove algebraically that the difference between any two different odd numbers is an even number.Thanks.
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2. asked by Joey
3. 1,517 views
Help please! I can't seem to get x as the answer to prove that they are inverses of each other!Show what f and g are inverse
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2. asked by Sara
3. 488 views
Create a system of linear equations that when solved algebraically, prove to have no solution.
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2. asked by I’m Going Back Home
3. 107 views
Prove algebraically that |w+z| is less than or equal to |w|+|z| for any complex numbers w and z, where || is the magnitude.After
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2. asked by Cambridge
3. 461 views
does anyone have a clue how to do this. I am so lost. If you can please explan why you do what you do when working this out so
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2. asked by jean
3. 1,054 views
does anyone have a clue how to do this. I am so lost. If you can please explan why you do what you do when working this out so
1. 0 answers
2. asked by jean
3. 439 views