3 years ago

What is the opposite of the real number -4

Mathematics

1 answer:

Tom [10]3 years ago

8 0

4 is the opposite of negative 4

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Step-by-step explanation:

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Read 2 more answers

F(x) = x^2 + 4x + 20 find the real roots. take your time if you want :)

s344n2d4d5 [400]

Answer:

No real roots

$x = -2 + 4i, x = -2 - 4i$

Step-by-step explanation:

Hello!

We can solve the quadratic by using the Quadratic Formula.

Standard form of a Quadratic: $ax^2 + bx + c = 0$

Quadratic Equation: $x = \frac{-b\pm\sqrt{b^2 - 4ac}}{2a}$

Given our Equation: $f(x) = x^2 + 4x + 20$

a = 1
b = 4
c = 20

Set the equation to 0 and solve using the formula.

<h3>Solve</h3>

$x = \frac{-b\pm\sqrt{b^2 - 4ac}}{2a}$
$x = \frac{-4\pm\sqrt{4^2 - 4(1)(20)}}{2(1)}$
$x = \frac{-4\pm\sqrt{16 - 80}}{2}$
$x = \frac{-4\pm\sqrt{-64}}{2}$
$x = \frac{-4\pm8i}{2}$
$x = -2 + 4i, x = -2 - 4i$

There are no real roots to the quadratic.

8 0

2 years ago

14. Subtract: 5 - 3 1/3.<br><br> A. 313<br> B.223<br> C. 12/3<br> D.23

exis [7]

Answer:

The answer is 1 $\frac{2}{3}$

The work is shown on the picture.

Step-by-step explanation: Hope this helps and mark brainliest if ya want :)!

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3 years ago