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
zhannawk [14.2K]
3 years ago
7

Solve the quadratic using the quadratic formula

02%20%3D%200" id="TexFormula1" title="5x {}^{2} + 12x - 2 = 0" alt="5x {}^{2} + 12x - 2 = 0" align="absmiddle" class="latex-formula">
Mathematics
1 answer:
ankoles [38]3 years ago
7 0
The quadratic formula:

ax^2+bx+c=0\\\\x_1=\dfrac{-b-\sqrt{b^2-4ac}}{2a};\ x_2=\dfrac{-b+\sqrt{b^2-4ac}}{2a}

We have:

5x^2+12x-2=0\\\\a=5;\ b=12;\ c=-2\\\\b^2-4ac=12^2-4\cdot5\cdot(-2)=144+40=184\\\\\sqrt{b^2-4ac}=\sqrt{184}=\sqrt{4\cdot46}=2\sqrt{46}

substitute

x_1=\dfrac{-12-2\sqrt{46}}{2\cdot5}=\dfrac{-6-\sqrt{46}}{5}\\\\x_2=\dfrac{-12+2\sqrt{46}}{2\cdot5}=\dfrac{-6+\sqrt{46}}{5}
You might be interested in
1. Point (−5,8) is reflected across the line = . What are the coordinates of ′? Show your work and explain.
netineya [11]

Answer:

(5,8) over y axis and (-5,-8) over x axis

Step-by-step explanation:

4 0
4 years ago
At a toy factory, toy cars are produced on an assembly line. It takes 8.216 seconds to attach the wheels. It takes 3.652 seconds
Leona [35]
The answer is 11.868 hopes this helps
8 0
4 years ago
HELP PLEASE!!! Find an equation of a line through (√3,12) parallel to the line:
amm1812

Answer:

just put like what oh yea put 72

3 0
3 years ago
ILL GIVE BRAINLY IF ITS RIGHT!!! PLSSS I NEED HELP ASAP
rjkz [21]

Answer: 1/2

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
(27a⁶b³c⁹)⅓<br> How to solve
LenaWriter [7]

Answer:

9a⁶b³c⁹

Step-by-step explanation:

Just divide the 27 by 3 since 27a⁶b³c⁹ is a single number

8 0
4 years ago
Other questions:
  • Please help with 5 <br><br><br><br><br><br><br><br><br><br><br> H
    9·2 answers
  • a total of 17100 seats are still available for the next hockey game if 62% of the tickets are sold, how many seats are in the ar
    15·1 answer
  • Mickey exercises 3/4 hour every day.How many hours does he exercises in 8 days
    12·2 answers
  • What is the length of QO?
    5·1 answer
  • NEED HELP FAST Which of the following have a frequency factor of b = 1?
    11·2 answers
  • 8-2+5<br><br> addition or subtraction
    7·2 answers
  • Please help will give brainly
    11·1 answer
  • Help me with this please I will mark brainliest
    11·2 answers
  • Please help me answer this :) and explain how you got your answer ! ( will give brainslt )
    14·1 answer
  • For anyone that knows please help!!!!!!!!
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!