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2 years ago

Please help

Mathematics

2 answers:

sergejj [24]2 years ago

6 0

I found this on an app I used it by completing the square but it didn't show this

pochemuha2 years ago

3 0

Answer: A) (x + 3)^2 + 6

Step-by-step explanation:

x^2 + 6x + 15

Subtract 15 from both sides of the equation.

x^2 + 6x = -15

Complete the equation and add to both sides. Since (6 = 3 + 3), (3 x 3 = 9)

x^2 + 6x + 9 = -15 + 9

Simplify

(x + 3)^2 = -6

Add 6 to both sides of the equation

(x + 3)^2 + 6

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Find the critical numbers of the function. (Enter your answers as a comma-separated list. If an answer does not exist, enter DNE

Viktor [21]

Answer:

Step-by-step explanation:

Given the function f(x) = 8x³ − 12x² − 48x, the critical point of the function occurs at its turning point i,e at f'(x) = 0

First we have to differentiate the function as shown;

$f'(x)= 3(8)x^{3-1}- 2(12)x^{2-1} - 48x^{1-1}\\ \\f'(x) = 24x^2 - 24x-48x^0\\\\f'(x) = 24x^2 - 24x-48\\\\At \ the\turning\ point\ f'(x)= 0\\24x^2 - 24x-48 = 0\\\\\\$

$Dividing \ through \ by \ 24\\\\x^2-x-2 = 0\\\\On \ factorizing\\\\x^2-2x+x-2 = 0\\\\x(x-2)+1(x-2) = 0\\\\(x-2)(x+1) = 0\\\\x-2 = 0 \ and \ x+1 = 0\\\\x = 2 \ and \ -1$

Hence the critical numbers of the function are (2, -1)

8 0

2 years ago

I really need some help it's hard to understand

Murljashka [212]

I think it’s 96 I might be wrong sorry if I am

6 0

2 years ago

What is the common ratio for the geometric sequence 24 -6 3/2 -3/8

Tomtit [17]

It is 25-6 7 :) that gonna be right

3 0

2 years ago

What is 2/3÷-3/5 as an improper fraction

rodikova [14]

Answer: -10/9

Step-by-step explanation: is this what you were looking for

8 0

2 years ago

What is the answer to 9 m+ 9

klemol [59]

Answer: 18m

Step-by-step explanation:

9m + 9

Simplify:

9+9=18

Hence, the answer to 9m + 9 is 18m.

3 0

2 years ago