![trin83](/avatars/7930.jpg)
trin83
17.12.2019 •
Mathematics
Solve (x + 3)2 + (x + 3) – 2 = 0. let u = rewrite the equation in terms of u. (u2 + 3) + u – 2 = 0 u2 + u – 2 = 0 (u2 + 9) + u – 2 = 0 u2 + u + 1 = 0 factor the equation. what are the solutions of the original equation?
Solved
Show answers
More tips
- S Style and Beauty How to Choose the Perfect Hair Straightener?...
- F Family and Home Why Having Pets at Home is Good for Your Health...
- H Health and Medicine How to perform artificial respiration?...
- H Health and Medicine 10 Tips for Avoiding Vitamin Deficiency...
- F Food and Cooking How to Properly Cook Buckwheat?...
- F Food and Cooking How Many Grams Are In a Tablespoon?...
- L Leisure and Entertainment Carving: History and Techniques for Creating Vegetable and Fruit Decorations...
- P Photography and Videography How to Choose the Perfect Photo Paper for Your Images?...
- H Health and Medicine What vaccines do children need?...
- H Health and Medicine Reasons for the Appearance of Warts: Everything You Need to Know...
Answers on questions: Mathematics
- E English Which statement illustrates how national interest shapes u.s. economic foreign policy?...
- E English How does Machiavelli work to achieve his secondary purposeto inform his readers? He explains that principalities don t know how to rule themselves. O He describes the steps people...
- H History What best describes Isaac Stevens attitude about Native American land rights in the pacific northwest? 1) native Americans had no right to their traditional lands but will be provided...
Ответ:
The solutions of the original equation are x=-5 and x=-2
Step-by-step explanation:
we have
Let
Rewrite the equation
Complete the square
rewrite as perfect squares
square root both sides
the solutions are
u=-2,u=1
Alternative Method
The formula to solve a quadratic equation of the form
is equal to
in this problem we have
so
substitute in the formula
the solutions are
u=-2,u=1
Find the solutions of the original equation
For u=-2
For u=1
therefore
The solutions of the original equation are
x=-5 and x=-2
Ответ:
Responder:
x = 15/7
Explicação passo a passo:
Dada a equação:
7 x + 4 = 19
Subtraia 4 de ambos os lados
7x + 4 - 4 = 19 - 4
7x = 15
Divida os dois lados por 7
7x / 7 = 15/7
x = 15/7