Question

slove the equation 7x^2-13=-20

Answer 1

solve for x

Answer 2

I got -1

Answer 3

let me chek

Answer 4

its in section talking about imaginary numbers and stuff

Answer 5

\[7x^{2}-13=-20\]\[7x^{2}=-7\]\[x^{2}=-1\]\[x=\sqrt{-1}\]\[x=\iota \] Thats a lowecase italic 'i' i.e. The imaginary Unit, it's just hard to type.

Answer 6

so how do you write the answer?

Answer 7

x = i But its a handwritten i not printed. Can't really do it on a computer.

Answer 8

ok thansk

Answer 9

You're welcome.