Question

Which of the following is a polynomial with roots: −square root of 3, square root of 3 , and 2?
x3 + 3x2 − 5x − 15
x3 + 2x2 − 3x − 6
x3 − 3x2 − 5x + 15
x3 − 2x2 − 3x + 6

Answer 1

@dude @Shadow I require A S S I S T A N C E ;-;

Answer 2

Not my type of math sorry

Answer 3

Lol it's all right. I appreciate the effort of coming onto the question lolol XD

Answer 4

To find the roots of an equation set it equal to 0

Answer 5

(I assume you can use a calculator but yeah, uh it’s not A)

Answer 6

factor out each equation

let's use B as an example x3 + 2x2 − 3x − 6

you can factor the first two terms into

(x^2)(x+2)
and the second two terms into

-3(x+2)

giving us

(x^2)(x+2) -3(x+2)

notice that you have an (x+2) part in each of these two terms, so you can also factor out (x+2) to get

(x^2-3)(x+2) = 0
setting each component equal to 0 gives us

(x^2-3) = 0 , x = +/- sqrt(3)
(x+2) = 0, x = -2

so B isn't quite it but you can repeat the process with the other choices to see what the right solution is