Question

how do I find the zeros (roots) of x^2+9

Answer 1

well they will be complex you are solving an equation... so you need to let

\[x^2 + 9 = 0\]

you need to find the values of x that make the equation zero... and there will be 2 zeros as its a quadratic equation.

subtract 9 from both sides of the equation and then take the square root of both sides.

one solution will be positive and the other negative

hope it helps

Answer 2

so like x+3 and x-3?

Answer 3

not quite... do it step by step...

subtract 9 from both sides of the equation... what do you get?

Answer 4

x=-9

Answer 5

well x^2=-9

Answer 6

nearly

\[x^2 = -9\]

now take the square root of both sides..

Answer 7

it would be x and the sqr root 3 i?

Answer 8

so is it root 3 i?

Answer 9

positive and negative

Answer 10

well nearly

\[x= \pm \sqrt{-9} ~~~or~~~ x = \pm \sqrt{9i^2}\]

so hopefully this will help you get the answer...

Answer 11

sweet thanks

Answer 12

you don't need the root since 9 is a square number

Answer 13

alrighty thanks dude