1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
GenaCL600 [577]
2 years ago
12

Reduce to lowest term. 2x^2- 18/x^2+4x-21​

Mathematics
1 answer:
Dovator [93]2 years ago
6 0

Answer:

\frac{2(x+3)}{x+7}

Step-by-step explanation:

Given

\frac{2x^2-18}{x^2+4x-21} ← factorise numerator and denominator

2x² - 18 ( factor out 2 from each term )

= 2(x² - 9) ← difference of 2 squares

= 2(x - 3)(x + 3)

and

x² + 4x - 21 = (x + 7)(x - 3) , then

= \frac{2(x-3)(x+3)}{(x+7)(x-3)} ← cancel common factor (x - 3) on numerator/ denominator

= \frac{2(x+3)}{x+7}

You might be interested in
How do I solve this.....I'm really dumb
Margaret [11]

Answer: 40 suit size

6.9 time

2 & 5  in runs scored

Step-by-step explanation:

mode is really easy.  All you have to do is calculate which number appears the most

7 0
2 years ago
Three side lengths of a right triangle are given which side length should you substitute for the hypotenuse in Pythagorean theor
ankoles [38]

Answer:

The longest length which you are given.

Step-by-step explanation:

The hypotenuse is the longest side in a right angled triangle. The largest side in a right angled triangle is known as the hypotenuse.

8 0
3 years ago
In the parallelogram below, z = ?°
katrin [286]

Answer:

z is 111 degrees

Step-by-step explanation:

69 ° and z is a linear pair, therefore:

69 + z = 180

z = 180 - 69

z= 111

7 0
2 years ago
What is the linear function equation represented by the graph?
SVETLANKA909090 [29]

Answer:

y=\frac{1}{3}x -4

Step-by-step explanation:

To write a linear function, use y=mx+b where m is the slope and b is the y-intercept. The y-intercept is where the line on the graph crosses the y-axis. On the graph is crosses at (0,-4). So b=-4. To find the slope, subtract the difference between two points on the line which cross through a grid line intersection. (0,-4) is one point. (3,-3) is another.

\frac{-3--4}{3-0}=\frac{-3+4}{3} =\frac{1}{3}

Input 1/3 and b=-4 into y=mx+b.

y=\frac{1}{3}x -4

4 0
3 years ago
Simplify (-5)^5 over (-5)^-6
xxMikexx [17]

Answer:

− 48828125

Step-by-step explanation:

you can use a calculator for algebra

5 0
2 years ago
Other questions:
  • The presentation of numerical information in a graph or table is called a data ___?
    14·2 answers
  • What percentage is 40kg of 1tonne?
    5·1 answer
  • Can someone please help me?!!? I don't know how to do this and I need help right now
    12·1 answer
  • What is Combine like terms: 9x+8y-4x-2y9x+8y−4x−2y
    11·1 answer
  • Help me out please please
    15·1 answer
  • What is 5 over 4 in math
    15·1 answer
  • a woman spent two thirds of her money. she lost two thirds of the remiander and then had $4(aus money) left. how much money did
    10·1 answer
  • BRAINLLY!!! PLEASE HELP I'll GIVE BRAINLY!!!!
    14·2 answers
  • What is the slope of the line that contains the points (-1, 2) and (3, 3)?
    10·1 answer
  • Zoe is packaging a gift to send in the mail. A smaller gift box is placed inside a similar yet larger packaging box. The empty s
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!