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
Oduvanchick [21]
2 years ago
13

X2-8x+10=0 solve for x

Mathematics
2 answers:
Pavel [41]2 years ago
8 0

Answer:

\sf x=\sqrt{6} +4

\sf x=4-\sqrt{6}

Step-by-step explanation:

\sf x^2-8x+10=0

Equations of the form ax^2+bx+c=0 can be solved by the quadratic formula:

\boxed{\sf \cfrac{-b\pm \sqrt{b^2-4ac}}{2a}}

Quadratic formula gives you two solutions one when (±) addition and one when (±) is a subtraction:

\sf x^2-8x+10=0

Substitute:

a:1

b:-8

c:10

\sf x=\cfrac{-\left(-8\right)\pm \sqrt{\left(-8\right)^2-4\times \:1\cdot \:10}}{2\times \:1}

Square -8, and multiply -4 by 10:

\sf x=\cfrac{(-8)\pm\sqrt{64-40} }{2}

Add 64 and - 40, and take the square root of 24:

\sf x=\cfrac{-(-8)\pm2\sqrt{6} }{2}

-(-8)= 8

\sf x=\cfrac{8\pm2\sqrt{6} }{2}

Now solve when (±) is a plus and then solve when it is a minus:-

\sf x=\sqrt{6} +4

\sf x=4-\sqrt{6}

____________________________

Oksi-84 [34.3K]2 years ago
3 0

Answer: x = 5/3

Step-by-step explanation:

You might be interested in
A tree measured 12 1/2
maxonik [38]

Answer:4.08 ft a year or 1 and 5/8 feet a year (approx)

Step-by-step explanation:

It's  12.5 feet the first year

51 feet 5 years later

If you do the math and divide 51 by 12.5, you get 4.08 which is around 1 and 5/8 ft

12.5x4.08 is  51 feet.

So the tree grows approximately 1 and 5/8 feet a year

3 0
3 years ago
What is the answer 51% of 128
Jobisdone [24]
Multiply 51% times 128 and u get 128
5 0
3 years ago
Please help I’ve been stuck on this for over 20 mins!
fgiga [73]

Answer:

5 1/3

Step-by-step explanation:

2÷3/8=

2*8/3=5 1/3

5 0
3 years ago
Read 2 more answers
What is 7/6y-8=2<br> A 5 5/9<br> B -10 4/5<br> C 18<br> D 20
koban [17]

Answer: The answer is actually 8 4/7

Step-by-step explanation:

Because...

7/6y-8=2

Add the 8 to the other side

7/6y=10

You then have you divide 7/6y by 7/6, then do it to the other side giving you 60/7.

That gives you a mixed number of 8 4/7.

4 0
3 years ago
John gives a cashier a $50 bill. He is buying an item for $5.32 . How much money should John get back?
timama [110]
He should get back 44.68 not including any tax
6 0
3 years ago
Read 2 more answers
Other questions:
  • Work out the answers to these<br> questions<br> 47+ 6.2 +86.7<br> 79.88+59+4.55
    11·1 answer
  • How can i use decimal models to add decimals?
    13·2 answers
  • Gus is making 48 oz of spiced cider. If he serves an equal amount to 7 people will each person get more than 1 cup of cider or l
    12·1 answer
  • A single story house is to be built on a rectangular lot 70 feet wide by 100 feet deep. The shorter side of the lot is along the
    13·1 answer
  • How to solve this equation algebraically: Y=2x+1<br> 3x+4y=26
    9·1 answer
  • How can you determine congurence and similarity
    15·1 answer
  • What is the value of x?<br>45°<br>( 2x-5)°​
    5·2 answers
  • What is the value of the expression below when c - 5 and d - 4 (c is to the second power)?
    6·1 answer
  • I need this done today whoever gets this correct gets brainliest!!! PLZZ HELPP MEE!!!<br> hurryy!!
    15·1 answer
  • A scientist used 2 gallons of liquid for ever 7 hours he worked. He uses ------of a gallon each hour he works
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!