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Mathematics 14 Online
OpenStudy (georgesyip):

how do this quadratic formula question

OpenStudy (georgesyip):

ax^2 + bx + c =0

OpenStudy (gorv):

u need to find the value of x

OpenStudy (gorv):

a formula is derived by completing the square called qudratic formula to find the value of x

OpenStudy (georgesyip):

c is 0

OpenStudy (gorv):

given in the Q ??

OpenStudy (georgesyip):

yes the bottom most point is (3,-

OpenStudy (gorv):

\[x=\frac{ -b \pm \sqrt{ b^2-4*a*c} }{ 2*a}\]

OpenStudy (georgesyip):

(3,-3^-2)

OpenStudy (gorv):

(-3)^2 ???

OpenStudy (georgesyip):

err squire root -3

OpenStudy (georgesyip):

sorry but how to u draw a graph

OpenStudy (gorv):

at bottom \[x=\frac{ -b }{ 2a }\]

OpenStudy (gorv):

|dw:1414928203310:dw|

OpenStudy (gorv):

depending on the value of a it will up or down ...

OpenStudy (gorv):

positive value of a means like above

OpenStudy (gorv):

negative value of a means

OpenStudy (gorv):

|dw:1414928266092:dw|

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