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Gnesinka [82]
3 years ago
12

tan^{2}x)tan(2x) }{tanx}" alt="\frac{(1-tan^{2}x)tan(2x) }{tanx}" align="absmiddle" class="latex-formula"> simplify
Mathematics
1 answer:
Ierofanga [76]3 years ago
6 0

Step-by-step explanation:

\frac{(1-tan^{2}x)tan(2x) }{tanx} \\  but \:  \tan(2x)  =  \frac{2 \tan(x) }{1 -  { \tan }^{2}x }  \\ therefore :  \\  =  \frac{(1 - { \tan ^{2}x)(2 \tan(x))  }}{ (\tan(x) )(1 - { \tan ^{2}x })}  \\  =  \frac{2 \tan(x) }{ \tan(x) }  \\  = 2

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If 2a+ 2/a =4, what is the value of 2a^2− 2/a^2 ?
aliina [53]

Answer:

0

Step-by-step explanation:

2a+ 2/a =4

Multiply each side by a to clear the fraction

a( 2a+ 2/a) =4*a

Distribute

2a^2 +2 = 4a

Subtract 4a from each side

2a^2 -4a +2 = 4a-4a

2a^2 -4a +2 =0

Divide by 2

2/2 a^2 -4a/2 +2/2 =0/2

a^2 -2a +1=0

Factor

(a-1) (a-1) =0

Using the zero product property

a=1

2a^2 -2/a^2

2(1)^2 -2/1^2

2-2

0

5 0
3 years ago
How can i solve 5×23×2
VARVARA [1.3K]

multiply 5 and 2 then that with 23.

5x2=10       23x10=230


3 0
3 years ago
Read 2 more answers
For f(x) = 3x^2 – X+5, 2f (-3) - f(4)=
Alenkinab [10]

Answer:

3x^2-x+5.2f\left(-3\right)-f\left(4\right) =

3x^2-x-19.6f

Step-by-step explanation:

3x^2-x+5.2f\left(-3\right)-f\left(4\right)

=3x^2-x-5.2f\cdot \:3-f\cdot \:4

=3x^2-x-15.6f-4f

=3x^2-x-19.6f

8 0
3 years ago
You are running an experiment in class where you draw colored marbles out of a bag. There are
MaRussiya [10]

Answer:

32768 ways

Step-by-step explanation:

Given

Marbles = 8 marbles

Selection = 5 (with replacement)

Required

Determine the number of ways

Because it is a selection with replacement; each selection is as follows:

First = 8\ marbles

Second = 8\ marbles

Third= 8\ marbles

Fourth = 8\ marbles

Fifth = 8\ marbles

Total number of ways is then calculated as:

Total = 8 * 8 * 8 * 8 * 8

Total = 32768

5 0
3 years ago
Find the slope-intercept form of the line.
Reika [66]
The slope-intercept is the first option, y=-3x-6
8 0
3 years ago
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