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Solve the quadratic equation $7x^2+21x-28=0$

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 Solution

 Formulas

 Videos

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

Tutorial - Solving a quadratic by completing the square ex 67, y= 2x^2+5x+7

https://www.youtube.com/watch?v=Yl5tVKEmnW8

Pre-Calculus - Using square root method to solve a quadratic equation with one variable, 7x^2 -11=0

https://www.youtube.com/watch?v=pO_rQMRe25U

Algebra 2 - Completing the square to solve a quadratic with irrational solutions, 2x^2 - 10x + 5 = 0

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

Algebra 2 - Solving by factoring and using the square root method x^2 + 16x + 64 = 15

https://www.youtube.com/watch?v=WGuLJdN2Tuo

 Function Plot

Plotting: $7x^2+21x-28$

SnapXam A²

Answer Assistant

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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: Equazioni quadratiche

 Used Formulas

See formulas (1)

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