anonymous
  • anonymous
Use the quadratic formula to find the roots of the equation. Round to tenths if necessary. x2 + x +10 = 0 A. {3.2} B. {-5.5, -2} C. {-3.2, 3.2} D. no real number solution
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.
katieb
  • katieb
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anonymous
  • anonymous
well, this is very easy if you know the quadratic formula
anonymous
  • anonymous
\[-b \pm \sqrt{b^2-4ac}/2a\]
anonymous
  • anonymous
this is D. BECAUSE DISCRIMINANT IS LESS THAN ZERO

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anonymous
  • anonymous
ohhhhhhh ok ok ok. Thx (: :D
anonymous
  • anonymous
Dawn, do you know what he means by discriminant?
anonymous
  • anonymous
no i dont know what that means ;(
amistre64
  • amistre64
discrimination is a term used in racism alot; it means to choose between options based on certain conditions. In racism, that condition was skin color. In math that condition is the sign of the number under the square root radical
anonymous
  • anonymous
haha wow. Relating it to real world rly helps to unerstand it even better.. wow thanks!! :D
amistre64
  • amistre64
:) square roots have 3 conditions: a negative number is bad, or just means that the solutions are imaginary. When it asks for "real" roots it wants a number eqal to or greater than zero. when the value is zero, then that part of the formula goes to zero and we are left with the other side only. any number + 0 = itself. any umber - 0 = itself.... so there is only one solution to the discrimnate being 0.... if it is a positive value, then we have 2 solutions for our quadratic because it tells us that the other part is added and subtracted by the same amount....
amistre64
  • amistre64
<.....-8..........-3............2.........> -|5| +|5|
anonymous
  • anonymous
ohhhh ok .
amistre64
  • amistre64
our roots in that last case are -8 and 2... becasue they are the same distance from the (-3)
amistre64
  • amistre64
when the distance is zero.....we only have the -3 left on the board to play with... <...................-3.......................> -|0| +|0|
amistre64
  • amistre64
there is no real number that is a negative distance; so that would actually cause a rip in the timeline and suck the -3 right out into another diminsion and wed be left with nothing to play with. <....................................> sqrt(-#)
amistre64
  • amistre64
that other diminsion is up or down in this case :) in either case, the -3 was removed from the timline itself and out of reach......

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