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3 years ago

Is -5^2 equal to (-5)^2 also ^ is equal to the phrase to the power of

Mathematics

2 answers:

guapka [62]3 years ago

7 0

<h3>Answer:</h3>

No.

Step-by-step explanation:

-5^2= -25,

while (-5)^2 = 25 because the "-" (negative) is inside of brackets.

^ is called Exponentiation.

ivann1987 [24]3 years ago

6 0

Answer: yes () just helps seperat the question in this case.

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Verify cot x sec^4x=cotx +2tanx +tan^3x

Tanzania [10]

Answer:

See explanation

Step-by-step explanation:

We want to verify that:

$\cot(x) \: { \sec}^{4} x = \cot(x) + 2 \tan(x) + { \tan}^{3} x$

Verifying from left, we have

$\cot(x) \: { \sec}^{4} x = \cot(x) \: ( 1 + { \tan}^{2} x )^{2}$

Expand the perfect square in the right:

$\cot(x) \: { \sec}^{4} x = \cot(x) \: ( 1 + { 2\tan}^{2} x + { \tan}^{4} x)$

We expand to get:

$\cot(x) \: { \sec}^{4} x = \cot(x) \: + \cot(x){ 2\tan}^{2} x +\cot(x) { \tan}^{4} x$

We simplify to get:

$\cot(x) \: { \sec}^{4} x = \cot(x) \: + 2 \frac{ \cos(x) }{\sin(x) ) } \times \frac{{ \sin}^{2} x}{{ \cos}^{2} x} +\frac{ \cos(x) }{\sin(x) ) } \times \frac{{ \sin}^{4} x}{{ \cos}^{4} x}$

Cancel common factors:

$\cot(x) \: { \sec}^{4} x = \cot(x) \: + 2 \frac{{ \sin}x}{{ \cos}x} +\frac{{ \sin}^{3} x}{{ \cos}^{3} x}$

This finally gives:

$\cot(x) \: { \sec}^{4} x = \cot(x) + 2 \tan(x) + { \tan}^{3} x$

3 0

3 years ago

Help me please!!!!!!!!!!!!

GuDViN [60]

Answer:

,,,,,,,,,,,,,,,,,,,,......................................,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,

Step-by-step explanation:

;-;

4 0

2 years ago

Pls hurry I’m running out of time<br><br> Will mark brainliest

murzikaleks [220]

13x - 7

You get this answer by adding the two together because mWEV is equivalent to the two known angles put together.

Hope this helps!

3 0

2 years ago

Terry placed 6 numbers tiles labeled 4,7,10,11,14,21 in a box he will pick one of the number tiles from the box without looking

melisa1 [442]

Out of the 6 numbers, 3 of them are even: 4, 10, and 14. The probability that he will pick an even number is therefore 3/6 = 1/2 = .5

7 0

2 years ago

These figures are congruent. What is the measurement? pic below

larisa [96]

Answer:

i dont know

Step-by-step explanation:

7 0

2 years ago