Math Is Fun Forum

paulb203

Member

Registered: 2023-02-24

Posts: 136

Quadratic equations. Solution for x. Is it AND, or, OR?

When we solve for x and get two answers do we state this as, for example, x = -2 OR x=3. Or do we state it as x = -2 AND x=3?

I'm new to quadratic equations, obviously, and I've heard someone say, 'Or', another say, 'And', and yet another just put a comma between the two answers.

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 46,332

Re: Quadratic equations. Solution for x. Is it AND, or, OR?

Hi paulb203,

Quadratic Equation.

There are two roots. The first or the second.

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It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

paulb203

Member

Registered: 2023-02-24

Posts: 136

Re: Quadratic equations. Solution for x. Is it AND, or, OR?

Thanks.
So one answer will work, when plugged in to the equation. And one won't work?

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 46,332

Re: Quadratic equations. Solution for x. Is it AND, or, OR?

No. Both will.

Quadratic Equation Solver.

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It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

amnkb

Member

Registered: 2023-09-19

Posts: 253

Re: Quadratic equations. Solution for x. Is it AND, or, OR?

When we solve for x and get two answers do we state this as, for example, x = -2 OR x=3. Or do we state it as x = -2 AND x=3?

I'm new to quadratic equations, obviously, and I've heard someone say, 'Or', another say, 'And', and yet another just put a comma between the two answers.

both sol'ns work
but x cant be 2 values AT THE SAME TIME
so x = -2 OR x = 3
but both are valid sol'ns