20 points!! plz help! 1. Subtract.

(7b + 1) - (3b - 1)

What is the answer?

Question 1 options:

4b +2

10b

4b

10b +2

2. Subtract.

(6x - 3) - (2x -2)

What is the answer?

Question 2 options:

8x -5

4x -1

4x -5

8x -1

3. Subtracting a polynomial from itself always results in another polynomial because 0 is a constant monomial.

Question 3 options:

True

False

4. Add

(5b^2 − 3b + 2) +(2b − 4)

What is the answer?

Question 5 options:

b^2 −2

-2

5b^2 −b − 2

5b^2 −5b − 2

This is the answer of your question. ☺☺

Step-by-step explanation:

1. 4b+2

2 4x-1

3 False

4 5b^2 -b-2

x = ±sqrt(10)

step-by-step explanation:

5 - 2x² = -15

subtract 5 from each side

5-5 - 2x² = -15-5

-2x^2   = -20

divide by -2 on each side

-2x^2   /-2= -20/-2

x^2 =10

take the square root on each side

sqrt(x^2 )=±sqrt(10)

x = ±sqrt(10)

check:

5 - 2x² = -15

+sqrt(10)

5 - 2(sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15

-sqrt(10)

5 - 2(-sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15

answer: 10 meter

step-by-step explanation:

need details