Question

If -nx2 + tx + c = 0, what is x equal to?

x is equal to minus t plus or minus square root of t squared minus 4 multiplied by n multiplied by c, all divided by minus 2 times n
x is equal to t plus or minus square root of t squared plus 4 multiplied by n multiplied by c, all divided by minus 2 times n
x is equal to t plus or minus square root of t squared minus 4 multiplied by n multiplied by c, all divided by minus 2 times n
x is equal to minus t plus or minus square root of t squared plus 4 multiplied by n multiplied by c, all divided by minus 2 times n

Answer 1

The answer is A

Answer 2

@phi

Answer 3

x=-t+-square root t^2-4ac/-2n is that correct?

Answer 4

it's hard to read equations written out in words.
but the formula to find x so that
\[ a x^2 + bx + c=0 \]
is
\[ \frac{1}{2a} \left(-b \pm \sqrt{b^2 -4ac} \right)\]

Answer 5

be careful about the signs.
what is a, b and c in your problem ?

Answer 6

that the thing idk

Answer 7

i just looked at the quadratic formula and that is it.

Answer 8

\[ -nx^2 + tx + c = 0 \]
what is "a" ?

Answer 9

-n

Answer 10

ok, and b is t and c is c

use a= -n, b= t and c=c in the quadratic formula.

Answer 11

ohh so its D

Answer 12

x=-t+-square root t^2+4ac/-2n

Answer 13

4nc i ment

Answer 14

yes

Answer 15

the - 4(-n)c becomes +4nc

Answer 16

if you see
-x^2 -2x -3
that means
-1*x^2 + -2*x + -3
and a = -1, b=-2 and c= -3