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3 years ago

Is x^2-1 a polynomial

Mathematics

1 answer:

77julia77 [94]3 years ago

4 0

Answer:

Yes it's a binomial.

Step-by-step explanation:

A polynomial is an expression with more than one term that often has variables and exponents on the variable. Since this has two terms separated by a subtraction sign with one term being a variable to the exponent of 2 then this is a polynomial. It is called a binomial. More than 2 terms are referred exclusively as a polynomial with ___ terms.

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How do I simplify this (sinx)/(secx+1)

pochemuha

Answer:

Step-by-step explanation:

$\frac{sin~x}{sec~x+1} =\frac{sin~x}{\frac{1}{cos~x}+1 } =\frac{sin~x~cos~x}{1+cos~x} \\=\frac{sin~x~cos~x}{1+cos~x} \times \frac{1-cos~x}{1-cos~x} \\=\frac{sin~x~cos~x(1-cos~x)}{1-cos^2 x} \\=\frac{sin~x~cos~x(1-cos~x)}{sin^2x} \\=\frac{cos~x(1-cos~x)}{sin~x} \\=cos ~x(csc~x-cot~x)\\or\\=cot~x(1-cos~x)$

6 0

3 years ago

Simplify the following expression. 5^-5/2 * 5^9/2

Evgesh-ka [11]

Answer:

C. 25

Step-by-step explanation:

When the numbers with same base are multiplied, their powers add up

5^-5/2 * 5^9/2

5^(-5/2 + 9/2)

5^(4/2)

5^2

8 0

3 years ago

Read 2 more answers

Which type of sampling method is being employed in the following example: "In order to test out a new dessert available at Chili

Margaret [11]

Answer:

Cluster sampling

Step-by-step explanation:

8 0

3 years ago

What is the measure of MBN?

shusha [124]

Answer:

180°

Step-by-step explanation:

The measure of MBN is equal to the measure of the central angle ahead it

that's mean the measure is 180° (90+90)

6 0

4 years ago

I need a little help on this other question : 8(2w-2)=7(3w+2)

Rama09 [41]

8(2w-2)=7(3w+2)

16w - 16 = 21w + 14

-30 = 5w

-30/5 = w

w = -6

3 0

3 years ago