Select the correct difference. -3z^7 - (-5z^7)

Answers

Answer 1

Answer: remember
x-(-y) means x+y since minusing a negative cancels

-3z^7+5z^7
addthe coeficients
one way to show is undistribute
-3z^7+5z^7=(z^7)(-3+5)=(z^7)(2)=2z^7

answer is 2z^7

Related Questions

If you split a right angle with a ray going through the middle of the right angle, the two angles formed will be ______. Select one: a. Obtuse b. Vertical c. complementary
1. Which of the following is the factored form of the expression: 3x2 – 4x? A. x(3x - 4) B. x(3 – 4x) C. (3x -1) (x -1) D. (3x +1)(x -1) 2. Which is a completely factored form of the expression: x2 + 21x +20 ? A. (x + 5)(x + 4) B. (x + 10)(x + 2) C. (x + 20)(x + 1) D. (x + 21)(x - 1) 3. Which expression is factored form of 4x2 -9? A. 2(x - 3)2 B. (x - 3)2 C. 2(x + 3)(x - 3) D. (2x + 3)(2x - 3) 4. Below are factored forms of the expression: 12x3 – 36x2 . Which expression has the greatest common factor as the first term? A. 3x (4x2 – 12x) B. 4x2(3x -9 C. 12x2(x – 3) D. 12x(x2 - 3x) 5. Adele’s lawn has an area of (x2 -5x -6) square feet and a length of (x + 1) feet. What is the width of the lawn in feet? A. (x -6) B. (x +6) C. (x2 -4x -5) D. (x2 -6x -7) 6. The expression below represents the area, in square meters, of a rectangle: X2 + 5x -24 Which of the following pairs of expressions could represent the length and width, in meters, of the rectangle? A. (x – 3) and (x + 8) B. (x – 4) and (x + 6) C. (x – 6) and (x + 4) D. (x – 8) and (x + 3) 7. What is the complete factorization of 32 – 8z2? A. -8(2 + z)(2 –z) B. 8(2 + z)(2 – z) C. -8(2 + z)2 D. 8(2 – z)2 8. What is the greatest common factor of: 12x2 , 24x2y2 , and 46xy? A. 4x B. 3x C. 6x D. 2x 9. Which expression is equivalent to: 2x2 -3x -35? A. (2x + 7)(x - 5) B. (2x - 7) (x + 5) C. (2x - 5)(x + 7) D. (2x + 5)(x - 7) 10. What are the factors of 81x2 + 36x + 4? A. (9x + 2)(x +2) B. (9x +2)(9x +2) C. (9x -2)(9x -2) D. (9x +2)(9x -2) 11. The top of a rectangular table has an area of: 18x2+ 69x +60. The width of the table is 3x + 4. What is the length of the table? (Show proof by multiplying – show your work) 12. Simplify: (x2 +2x)(5x -3) A. 11x2 -3 B. 6x3 -6x C. 5x3 + 7x2 – 6x D. 5x3 – 13x2 -6x 13. Factor by grouping: 30g5 +24g3h – 35g2h2 - 28h3 Show your work! 14. Which is the correct way to factor the polynomial : x2 -16? A. (x -4)(x -4) B. (x -4)(x +4) C. (x +4)(x -2)(x +2) D. Not factorable 15. The area of a square painting is: 81p2 + 90p +25. What is the length of one side? Prove by multiplication – show your work.
If 1+4=5, 2+5=12, 3+6=21 then 8+11=?
Fill in all statements and reasond (geomety proof).
Which is the graph of f(x) = x2 – 2x + 3?

which one of following statement expresses a true proportion 3:4=9:12 b. 2:1=1:2 c. 7:9=8:9 d. 54:9=6:3

Answers

a is the right one:
a. 3:4=9:12
3×3:4×3=9:12

1. Find the surface area of the sphere 40 feet

Answers

Answer:

r≈1.78

Step-by-step explanation:

Given ƒ(x) = 8x + 25, find x when ƒ(x) = 9.
A) -2
B) -1
C) 0
D) 2

Answers

A)-2
9=8x+25
-16=8x
X=-2

How do you solve x²-10x+9=0 by completing the square?

Answers

$x^2-10x+9=0\n\n\underbrace{x^2-2x\cdot5+5^2}_((*))-5^2+9=0\n\n(x-5)^2-25+9=0\n\n(x-5)^2-16=0\ \ \ /+16\n\n(x-5)^2=16\iff x-5=-√(16)\ \vee\ x-5=√(16)\n\nx-5=-4\ \vee\ x-5=4\n\nx=-4+5\ \vee\ x=4+5\n\nx=1\ \vee\ x=9$

$(*)\ (a-b)^2=a^2-2ab+b^2$

$x^2-10x+9=0 \n \nx^2-2\cdot5x+5^2-5^2+9=0\n \n(x-5)^2-25+9=0\n \n(x-5)^2=16\n \nx-5=4\ \ \vee\ \ x-5=-4\n \nx=9\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ x=1$

Two consecutive integers have a sum of 107. Find the integers.

Answers

Let
x = first consecutive number
x + 1 = second consecutive number

Based on the problem, we equate
x + (x + 1) = 107
Solving for x,
2x + 1 = 107
2x = 107 - 1
2x = 106
x = 106/2 = 53
and x + 1 = 54

Therefore, the numbers are 53 and 54.

Consider the function represented by the equation 6c = 2p – 10. Write the equation in function notation, where c is the independent variable.