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Mathematics 21 Online
OpenStudy (anonymous):

Fill in the missing term so that the quadratic equation has a graph that opens up, with a vertex of (–2, – 16), and x intercepts at x = –6 and x = 2. (Do not include the negative sign in your answer.) y = x2 + 4x − ___ Help me on this one it's hard

OpenStudy (anonymous):

some help me please

OpenStudy (anonymous):

@Machida

OpenStudy (anonymous):

@Ryaan

OpenStudy (anonymous):

do u guys know how to do this?

OpenStudy (anonymous):

@Hero , @.Sam. , @ganeshie8 , @ash2326

OpenStudy (anonymous):

thanks @Machida

OpenStudy (anonymous):

ugh i need help

hero (hero):

If it has x-intercepts at -6 and 2, then just multiply (x + 6)(x - 2) to figure out the quad

sam (.sam.):

If the vertex is (–2, – 16), Then \[y=(x+2)^2-16\]

sam (.sam.):

Vertex=(A,B) \[y=(x-A)^2+B\]

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