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
mafiozo [28]
3 years ago
13

What are the solutions of this equation? x^ - x - 56 = 0

Mathematics
2 answers:
NikAS [45]3 years ago
8 0

Answer:

y = 0

Step-by-step explanation:

Lady_Fox [76]3 years ago
3 0

\large\bf{\underline{Solutions:}}

‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎\large\bf{⟹8 , -7}

__________________________________________

\large\bf{\underline{Given\: equation :}}

‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎\large\bf{⟹ x^2 -8x-56 }

__________________________________________

\large\bf{\underline{Using\: middle\:term\: splitting}}

\large\bf{Here, a = 1 , b = 1 \:and \:c= 56 }

\large\bf{ ⟹ a\times c = 1\times56 =56}

  • Therefore we need two terms which on adding or subtracting with each other gives 56 and on multiplying gives 56

__________________________________________

\large\bf{\underline{By\: splitting \:the\:middle\:term:}}

‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎\large\bf{⟹x^2-8x+7x-56}

‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎\large\bf{⟹x(x-8)+7(x-8}

‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎\large\bf{⟹(x-8)(x+7)}

\large\bf{\underline{Hence}}

‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎\large\bf{⟹x-8=0}

‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎\large\bf{⟹x=0+8}

‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎\large\bf{⟹x=8}

‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎and

‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎\large\bf{⟹x+7=0}

‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎\large\bf{⟹x=0-7}

‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎\large\bf{⟹x=-7}

You might be interested in
The number of mosquitoes M(x), in millions, in a certain area depends on the June rainfall x, in inches: M(x) = 13 x - x2. What
My name is Ann [436]

Answer:

The number of mosquitoes is maximum for 6.5 inches rainfall.

Step-by-step explanation:

The given function is

M(x)=13x-x^2                   .... (1)

where, M(x) is number of mosquitoes in millions and x the June rainfall in inches.

We need to find the rainfall that produces the maximum number of mosquitoes.

Differential the above function with respect to x.

M'(x)=13-2x               .... (2)

Equate first derivative equal to 0.

13-2x=0

2x=13

x=\frac{13}{2}=6.5

Differential function (2) with respect to x.

M''(x)=-2

Double derivative is negative. So, the value of function is maximum at x=6.5.

Therefore, the number of mosquitoes is maximum for 6.5 inches rainfall.

4 0
3 years ago
Translate please <br><br> The quotient of a number and the sum of the number and 5 is -2
julia-pushkina [17]
X/X+5=-2
please mark brainiest if this helped you out<span />
6 0
4 years ago
What is the unit rate, expressed in kilometers per minute?
nikklg [1K]
The correct answer is D
6 0
4 years ago
Read 2 more answers
389,422 change all the digits
alexira [117]
389,422 rounded is 400,000.
6 0
4 years ago
|
dedylja [7]
Right there 125677 on the left you go 4 ahhbsn

6 0
3 years ago
Other questions:
  • How do you solve 2x+4=7
    8·1 answer
  • Select the property that allows 3=x
    14·2 answers
  • Find the area and show all work
    6·2 answers
  • Write an equation for sidewalk one in slope intercept form.
    5·1 answer
  • How can I work it out to find the product of 7-3,7
    14·1 answer
  • Which table represents an exponential function of the form y = b^k when 0 &lt; b &lt; 1?
    13·2 answers
  • Each of four tables at a party is set bowl with a bowl of grapes each Bowl contains 5/8 of a pound of grapes how many pounds of
    9·1 answer
  • Help please some one
    7·1 answer
  • 3(2y + 3) = 1(y + 1)
    8·2 answers
  • 3p + 10 = 2p + 21 <br><br>a. 15<br>b. 17<br>c. 11<br>d. 21​
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!