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use the quadratic formula to find any xintercepts on the graph of the equation.
y=x^2  8x 1
x=?
 one year ago
 one year ago
use the quadratic formula to find any xintercepts on the graph of the equation. y=x^2  8x 1 x=?
 one year ago
 one year ago

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mathsmindBest ResponseYou've already chosen the best response.0
set y =0, and solve the quadratic equation
 one year ago

ZeHanzBest ResponseYou've already chosen the best response.0
Set a=1, b=8 and c=1 in the QF.
 one year ago

mathsmindBest ResponseYou've already chosen the best response.0
\[x=4+\sqrt{17} or x=4\sqrt{17}\]
 one year ago

mathsmindBest ResponseYou've already chosen the best response.0
you need to use the quadratic formula
 one year ago

mathsmindBest ResponseYou've already chosen the best response.0
\[x=\frac{ b \pm \sqrt{b^24ac} }{ 2a }\]
 one year ago

mathsmindBest ResponseYou've already chosen the best response.0
so the final answer would be
 one year ago

mathsmindBest ResponseYou've already chosen the best response.0
\[(4+\sqrt{17}, 0) and (4\sqrt{17}, 0)\]
 one year ago

kevingretzkyBest ResponseYou've already chosen the best response.0
8 square root 68 over 8?
 one year ago

kevingretzkyBest ResponseYou've already chosen the best response.0
so am i right? it is over 4
 one year ago
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