Please Help Me !!!!!!
1. Polynomials Add or subtract
(4x2 + 15x – 3) – (–3x2 + 5) (1 point)
A.7x2 + 15x – 8
B.x2 + 12x + 2
C.x2 + 15x – 8
D.7x2 + 8 2.
2. Simplify the polynomial.
–3f2 + 4f – 3 + 8f2 + 7f + 1 (1 point)
A.5f2 – 11f + 2
B.11f2 + 11f + 2
C.5f2 + 11f – 2
D.–5f2 + 11f – 2
3. Add or subtract
(2x2 + 6x + 1) + (–7x2 + 2x – 3) (1 point)
A.5x2 – 4x – 2
B.–5x2 + 8x – 2
C.5x2 – 8x + 2
D.–9x2 – 8x + 2
4. Name the coefficients in the polynomial.
4x2 + 3x – 3 (1 point)
A.4, –3, –3
B.4, 3
C.4, 3, 3
D.–4, –3
5. How many terms are in the following polynomial?
6x4 + 3x3 – 2x2 + 15x – 14 (1 point) A. 5
B.4
C.3
D.2
6. In the expression –7x – 5x2 + 5, what is the coefficient of x? (1 point)
A.7
B.5
C.–5
D. -7
7. Write the expression using scientific notation.
(2.5 • 104)(4 • 103) (1 point)
A.10 • 107
B.10 • 108
C.1 • 108
D.10 • 1012
8. Write the expression using a single exponent.
22 • 28 (1 point)
A.410
B.210
C.416
D.216
@ What your looking for, I used yours and I got 3 right..
Knee grow is correct most of your answers are completely wrong.
i was thikig the same thig i was like its ot homework its a test but anywho your a liar what youre looking for none of them are right
ACBBADC. Sorry I don not know the last one.
student does not know how to type exponents
This means
2^2 * 2^8
which is 2^(2+8)
or
2^10
As I was typing this I realized how fishy it looks, but that is the correct answers. Hi connexus students! c:
c
d
c
d
c
d
b
a
c
a
c
a
1. To add or subtract polynomials, we combine like terms. In this case, we have (4x^2 + 15x - 3) - (-3x^2 + 5).
To subtract the second polynomial (-3x^2 + 5), we distribute the negative sign to each term inside the parentheses, so it becomes (+3x^2 - 5).
Now, we can rewrite the problem as (4x^2 + 15x - 3) + (3x^2 - 5).
Combine like terms by adding or subtracting coefficients of the same degree. We have (4x^2 + 3x^2) + 15x + (-5) - 3.
Simplifying further, we get 7x^2 + 15x - 8.
Therefore, the correct answer is option C: x^2 + 15x - 8.
2. To simplify the polynomial -3f^2 + 4f - 3 + 8f^2 + 7f + 1, we combine like terms.
Start by adding or subtracting coefficients of the same degree. We have (-3f^2 + 8f^2) + (4f + 7f) - 3 + 1.
Simplifying further, we get 5f^2 + 11f - 2.
Therefore, the correct answer is option A: 5f^2 - 11f + 2.
3. To add or subtract polynomials, we combine like terms. In this case, we have (2x^2 + 6x + 1) + (-7x^2 + 2x - 3).
Combine like terms by adding or subtracting coefficients of the same degree. We have (2x^2 - 7x^2) + (6x + 2x) + 1 - 3.
Simplifying further, we get -5x^2 + 8x - 2.
Therefore, the correct answer is option B: -5x^2 + 8x - 2.
4. The coefficients in the polynomial 4x^2 + 3x - 3 are the numerical values that multiply the variables. In this case, the coefficients are 4, 3, and -3.
Therefore, the correct answer is option A: 4, -3, -3.
5. To determine the number of terms in a polynomial, count the number of distinct terms in the expression. In this case, the polynomial 6x^4 + 3x^3 - 2x^2 + 15x - 14 has 5 terms.
Therefore, the correct answer is option A: 5.
6. The coefficient of x in the expression -7x - 5x^2 + 5 is the numerical value that multiplies the variable x. In this case, the coefficient of x is -7.
Therefore, the correct answer is option D: -7.
7. To write the expression using scientific notation, we need to multiply the given numbers: (2.5 * 10^4)(4 * 10^3).
When multiplying numbers in scientific notation, multiply the coefficients and add the exponents of 10. We have (2.5 * 4) * (10^4 * 10^3) = 10 * 10^7.
Simplifying further, we get 10 * 10^7 = 10^8.
Therefore, the correct answer is option C: 1 * 10^8.
8. To write the expression using a single exponent, we need to evaluate the given expression: 22 * 28.
When multiplying numbers with the same base, add the exponents. In this case, 2 + 8 = 10.
Therefore, the correct answer is option A: 410.