3 years ago

How to simplify imaginary numbers?

Mathematics

1 answer:

Anvisha [2.4K]3 years ago

4 0

(-1)^1/2 = i
80i
45i
12i
90i
7+121i

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Is -0.28764 rational or irrational and how do you figure that out?

kvv77 [185]

It is rational. Any number that can be described as a fraction is rational while those that do not are irrational.

-0.28764 is the same as -(28764/100000) and positive, negative does not matter.

8 0

3 years ago

Rhett is solving the quadratic equation 0= x2 – 2x – 3 using the quadratic formula. Which shows the correct substitution of the

Artemon [7]

Answer:

StartFraction 2 plus or minus StartRoot (negative 2) squared minus 4(1)(negative 3) EndRoot Over 2(1) EndFraction

Step-by-step explanation:

General quadratic equation: ax^2 + bx + c

where a is the coefficient of the quadratic term, b is the coefficient of the linear term and c is the independent term. Here the equation is: x^2 – 2x – 3, so a = 1, b = -2 and c = -3

Quadratic formula:

$x = \frac{-b \pm \sqrt{b^2-4(a)(c)}}{2(a)}$