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Solve the quadratic equation $2x^2+x-1=0$

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 Solution

 Videos

Solving quadratic equations by square roots | Algebra II | Khan Academy

https://www.youtube.com/watch?v=55G8037gsKY

Solving a natural logarithmic equation using the quadratic formula

https://www.youtube.com/watch?v=Nf87n5ro_J4

Algebra 2 - Learn the ac method for factoring and solving a quadratic equation 9x^2‐12x‐5=0

https://www.youtube.com/watch?v=kKE4t7R_KWc

Algebra 2 - Learn how to complete the square by factoring out a term 2x^2-10x+5=0

https://www.youtube.com/watch?v=Lz-CS363Fpg

Algebra 2 - Learn how solve a quadratic by completing the square with fractions, x^2 + 3x + 6 = 0

https://www.youtube.com/watch?v=KWBr5zM3tXs

Algebra 2 - Solving a factored quadratic equation using the zero product property, -x(3x + 5) = 0

https://www.youtube.com/watch?v=3on6rsKoK_k

 Function Plot

Plotting: $2x^2+x-1$

SnapXam A²

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1

2

3

4

5

6

7

8

9

0



a

b

c

d

f

g

m

n

u

v

w

x

y

z

.

(◻)

+

-

×

◻/◻

/

÷

◻²

◻^◻

√◻

√

^◻√◻

^◻√

∞

e

π

ln

log

log_◻

lim

d/dx

D^□_x

∫

∫^◻

|◻|

θ

=

>

<

>=

<=

sin

cos

tan

cot

sec

csc

asin

acos

atan

acot

asec

acsc

sinh

cosh

tanh

coth

sech

csch

asinh

acosh

atanh

acoth

asech

acsch

 How to improve your answer:

 Main Topic: Equations

In mathematics, an equation is a statement of an equality containing one or more variables. Solving the equation consists of determining which values of the variables make the equality true. In this situation, variables are also known as unknowns and the values which satisfy the equality are known as solutions.

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