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
Alina [70]
3 years ago
12

X2 + 2 – 42 = 0. Solve quadratic equation

Mathematics
2 answers:
kari74 [83]3 years ago
6 0

Answer:

2\sqrt{10}, -2\sqrt{10}

Step-by-step explanation:

(x^2) + 2 - 42 = 0

(x^2) - 40 = o

x =± \sqrt{40\\}

x =± 2\sqrt{10}

Therefore x = 2\sqrt{10}, -2\sqrt{10},

grigory [225]3 years ago
4 0

Answer:

-2√10, 2√10

Step-by-step explanation:

Graphing x²-40 would be the fastest way to go. However, because this is not factorable, you have to use the quadratic formula to solve it if you want to do it algebraically.

You might be interested in
Solve for x<br><br>4x+6-7+9=18​
Alla [95]

here is your ans have a nice day

6 0
3 years ago
Read 2 more answers
In one week, each cat at a cat shelter eats 7 cans of cat food. How many cans of cat food are needed for 7 cats eat in one week?
Llana [10]
49 is your answer 7 x 7 = 49
4 0
3 years ago
Read 2 more answers
Help please. I can't remember how to do these
ipn [44]
You have to multiplying 10x10 giving you 20 dividing six hours to 20. Then that answer divied by 5.

There's your answer :)
6 0
3 years ago
Read 2 more answers
Which of the following is the correct answer when you factor: −2x4+10x5+2x6?
qaws [65]

Answer:

54

Step-by-step explanation:

−2x4+10x5+2x6

5 0
3 years ago
Round to nearest thousand then subtract
Helga [31]

Answer:

3000

Step-by-step explanation:

5,503 - 3417

6000 - 3000

3000

5 0
3 years ago
Other questions:
  • What is 27 x 6 standard ways
    6·2 answers
  • Write the sentence as an inequality.<br> A number b divided by -14 is less than -25.
    6·2 answers
  • Given the Venn diagram below, which statement must be true?
    11·1 answer
  • Please don't put absurd answers, ty.
    5·2 answers
  • Which point is a solution to the equation Y = 4x - 5<br> A. (-3,-17) B. (4,7) C. -2,-18) D. (3,17)
    5·1 answer
  • Please help, which one is the correct choice?
    9·1 answer
  • In ΔOPQ, the measure of ∠Q=90°, OQ = 39, QP = 80, and PO = 89. What ratio represents the cosine of ∠P?
    11·1 answer
  • Mary is making a poster to take with her to her favorite band's concert. The poster she has to decorate is 113 feet by 214 feet.
    5·1 answer
  • Nolan just drove at a constant rate for 5 hours. He is now 340 miles from where he started. At what rate was he driving? Nolan h
    14·1 answer
  • Represent the following sentence as an algebraic expression, where "a number" is the
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!