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
dmitriy555 [2]
3 years ago
9

Solve the given equation by completing the square.

Mathematics
1 answer:
klasskru [66]3 years ago
3 0

Answer:

Step-by-step explanation:

x^2+8x=38\\\\x^2+8x-38=0\\\\\Delta=8^2+4*38=216=6^3\\\\x=\dfrac{-8-6\sqrt{6}  }{2} \ or\ x=\dfrac{-8+6\sqrt{6}  }{2}\\\\x=-4-3\sqrt{6} \ or\ x=-4+3\sqrt{6}\\\\a=-4\\b=3\\c=6\\

You might be interested in
Write an expression to describe the sequence 35, 36, 37.....
lyudmila [28]

Answer:

Step-by-step explanation:

start with 35 and add 1 repeatedly.

7 0
3 years ago
Read 2 more answers
Simplify: 2 (x+6) + 8x<br><br> when x = 3
IceJOKER [234]

Answer:42

Step-by-step explanation:

2(3+6)+(8)(3)

=(2)(9)+(8)(3)

=18+(8)(3)

=18+24

=42

leave a like if this helped please

8 0
3 years ago
how will I put this in an equation a giraffe is 4 tines as tall as a gorilla the gorilla is 6 feet tall
Mumz [18]

Answer:

WHY IS IT SO TALL

Step-by-step explanation:

WHY WHY WHY

7 0
3 years ago
Simplify
Diano4ka-milaya [45]

Answer:

\huge\boxed{\sqrt[4]{16a^{-12}}=2a^{-3}=\dfrac{2}{a^3}}

Step-by-step explanation:

16=2^4\\\\a^{-12}=a^{(-3)(4)}=\left(a^{-3}\right)^4\qquad\text{used}\ (a^n)^m=a^{nm}\\\\\sqrt[4]{16a^{-12}}=\bigg(16a^{-12}\bigg)^\frac{1}{4}\qquad\text{used}\ a^\frac{1}{n}=\sqrt[n]{a}\\\\=\bigg(2^4(a^{-3})^4\bigg)^\frac{1}{4}\qquad\text{use}\ (ab)^n=a^nb^n\\\\=\bigg(2^4\bigg)^\frac{1}{4}\bigg[(a^{-3})^4\bigg]^\frac{1}{4}\qquad\text{use}\ (a^n)^m=a^{nm}\\\\=2^{(4)(\frac{1}{4})}(a^{-3})^{(4)(\frac{1}{4})}=2^1(a^{-3})^1=2a^{-3}\qquad\text{use}\ a^{-n}=\dfrac{1}{a^n}

=2\left(\dfrac{1}{a^3}\right)=\dfrac{2}{a^3}

5 0
4 years ago
Can you factor m3 - 216
Sergio039 [100]

Answer:

Step-by-step explanation:

m³ -216 = m³ - 6³

a³ - b³ = (a-b) (a² + ab + b²)

a =  m  and b = 6

m³ - 6³ = (m - 6)(m² + 6m + 6²)

             = (m - 6)(m² + 6m + 36)

6 0
3 years ago
Other questions:
  • Which answer correctly estimates the product of 79.623 × 4.83?
    7·1 answer
  • How many ways are there to choose 6 items from 10 dis- tinct items when?
    12·1 answer
  • 7-11 mini-mart started a promotion where you can buy a refillable 40 oz. Soda for a one-time price $6.00, then fill the cup for
    12·1 answer
  • Which of the following is not a characteristics of a plane?
    14·1 answer
  • Yoshi and Rana serve muffins. There are 3 muffins with nuts. 1/6 of the muffins have nuts. How many muffins do they serve in all
    7·2 answers
  • An investor invested a total of $2,800 in two mutual funds. One fund earned 5% profit while the other earned 3% profit. If the i
    7·1 answer
  • Which is a diagonal through the interior of a cube​
    7·2 answers
  • Write an equation in standard form passing through the points (-2,0) and (-3,-1).
    8·1 answer
  • Can u pls help me with this question ​
    12·1 answer
  • Moe and Larry each need to raise $200 to go on a trip with their school band.
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!