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
Nostrana [21]
3 years ago
12

Solve the equation by completing the square m^2+6m-77=-5

Mathematics
1 answer:
Grace [21]3 years ago
6 0
Maybe you thought about this:
m^2+6m-77+5=0 => m^2+6m-72=0 => m^2+ 2*3*m+3^2-3^2-72=0
=> m^2+2*3*x+3^2= (m+3)^2 this is the complete square of the binomial, we will still keep it =>
(m+3)^2 -9 -72=0 => (m+3)^2 - 81 = 0 => (m+3)^2 - 9^2 = 0
Now we got the difference squares, it mean a^2 - b^2 = (a-b) (a+b)
In according to this => (m+3-9) (m+3+9) = 0 =>
(m-6) (m+12)=0 => m-6=0 or m+12=0 => m1=6 or m2= -12 !!!!
Are you satisfied with this solution?

You might be interested in
A student solved an equation and got the answer 3=9 how many solutions dose the equation have?
Nady [450]

Answer:

No solutions, 0

Step-by-step explanation:

When you solve a equation and get an answer of n = s (I am just using n and s a placeholders. They that be any number.) where n ≠ s, then there are no solutions to the equation.

3 0
4 years ago
Is there any way to calculate the exact (or close to exact) value of a logarithm without using a calculator? I don't mean logari
lara [203]

The expression log₆(3/50) = x and the similar expression cannot be solved without a calculator or logarithm table

<h3>How to solve logarithm without calculator?</h3>

There are three ways to solve a logarithm expression

  • Using calculator
  • Using the logarithm table
  • Logarithm rules

If a logarithmic expression cannot be solved by logarithm rules, then one has to apply a calculator or logarithm table to solve such expression

The above means that the expression log₆(3/50) = x and the likes cannot be solved without a calculator or logarithm table

Read more about logarithmic expressions at:

brainly.com/question/10727370

#SPJ1

8 0
2 years ago
PLEASE HELP ASAP!!!
alexandr1967 [171]

Answer:

H and c

Step-by-step explanation:

5 0
3 years ago
Brandon bought a baseball on for $15.00. He had a coupon for a 20% discount. How much did Brandon pay for the baseball?
IRINA_888 [86]
Brandon payed $12.00. So C.
8 0
3 years ago
Read 2 more answers
What is .8 percent of 2000
REY [17]
.8 percent of 200 is 1600 becaus 2000* .8=1600
3 0
3 years ago
Read 2 more answers
Other questions:
  • What is the...
    12·1 answer
  • Which is greater 4/5 or 6/10
    9·2 answers
  • 12 is blank percent of 200
    10·2 answers
  • Gary needs 24 screws for every 2 chairs he builds.
    7·2 answers
  • 5x+12=-7x solve each system by subsitution
    7·2 answers
  • How do you graph 1/4x+y=3
    15·1 answer
  • Abigail is a waitress at a restaurant. Each day she works, Abigail will make a
    13·1 answer
  • In math, a single number, a variable or numbers and variables multiplied together.HELP!!!!
    12·1 answer
  • Maria is 24 years older than his son now. Three years ago, her age was three times of her son's age. Calculate the age of Maria'
    8·1 answer
  • Estimate the answer. 98x72=
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!