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10-07-2003
03:00 AM

10-07-2003
03:00 AM

Can Quad. func. cross x-axis in three pl.

Question asks: Can the graph of a quadratic function cross the x-axis in three different places? Explain your answer.

(try to make it simple enough for me to understand if possible thanx :))

Thanx for the help...

(try to make it simple enough for me to understand if possible thanx :))

Thanx for the help...

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10-07-2003
03:00 AM

10-07-2003
03:00 AM

Can Quad. func. cross x-axis in three pl.

You do know that the x-coordinate of a point where f(x)= ax^{2}+bx+c crosses the x-axis is a zero of the function.

If ax^{2}+bx+c had three zeros say *j,k & m* then each of (x-*j*), (x-*k*) & (x-*m*) would have to be a factor. But would the product (x-*j*)(x-*k*)(x-*m*) be a quadratic equation?

PKA

If ax

PKA