how do you simplify -3+-√63/-4 farther? I'm stuck.
Did u mean this : \[\huge{\frac{-3\pm\sqrt{63}}{-4}}\]
yes.
I think the technical term for this kind of expression is "ugly" no I don't think you can simplify anything
the answer is left as it is....its irrational and u cannot and need not simplify it.
U can calculate this : But u can not simplify this
idk wtf this guy teached me then?
the answers are x=3+-i√29/2 < and then the same but just -3 and then x=3+-i√23 and then the same just with -3 thses are my choies
\[-3/-4\pm \sqrt{63}/-4; 3/4\pm \sqrt{63/16}; 0.75 \pm \sqrt{3.9375}\]
the final result would be \[\frac{3\pm 3\sqrt{7}}{4}\]
ok clear i think we can simplify this further : \[\huge{\frac{-3\pm\sqrt{7*9}}{-4}}\] \[\huge{\frac{-3\pm3\sqrt{7}}{-4}}\]
I know and that's what I dnt get cuz that's not one of my choices
oh but u can write the square root as the one helder_edwin mentioned 63=9*7 so square root of 9 simplifies to 3
Can u give the whole question to us please ?
Solve x^2 – 3x = –8
the equation would be then x^2-3x+8=0.
ok
yea then u made a mistake the answer is ur first choice....remember solution to quadratic eqn contains the term b^2-4ac??
this solves into \[ \frac{3\pm \sqrt{9-4\cdot 1\cdot 8}}{2}=\frac{3\pm\sqrt{-23}}{2}=\frac{3\pm \sqrt{23}i}{2} \]
wait which one is it, you guys gave 2 different answers?
the above is right
okay thank you guys very much, you were very helpful
you are welcome
:D
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