What are roots of the equation -90=x (x-18)

Mathematics

1 answer:

daser333 [38]3 years ago

4 0

Answer:

-90= $x$ ( $x$ -18)

-90= $x^{2}$ -18 $x$

$0=x^{2}-18x+90$

$x=9+3i or 9-3i$

Step-by-step explanation:

you need to use quadratic formula and you will find square root a negative ( -9 ), which is an imaginary no.

square root (-9) = 3i

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