Solve by factoring and applying the zero product property.

[marshall1432]

Solve by factoring and applying the zero product property.

10x'2squared' - 13x=3

WORK DONE :

10x'squared' - 13x =3

(10x-9)(x-4)=3

10x-9=3 = 10x=12 ; x-4=3 = x=7

 

[stapel]

10x'squared' - 13x =3

(10x-9)(x-4)=3

Apparently your classroom lecture and your textbook omitted a very important point: namely, the Zero Product Property! :shock:

To replace that missing information, please review the property in at least one online lesson. You will quickly see why your factorization cannot possibly lead to the correct answer.

Also, it appears that your class didn't cover factoring, so please study some lessons on factoring quadratics (which is also sometimes called factoring trinomials).

Once you have the necessary background material, please attempt the exercise again. If you get stuck, or are unsure of your solution, please reply showing all of your steps and reasoning. Thank you!

Eliz.

 

[Deleted member 4993]

Solve by factoring and applying the zero product property.

10x'2squared' - 13x=3

WORK DONE :

10x'squared' - 13x =3

(10x-9)(x-4)=3 <-- How did you get here from above

If you multiply out (10x - 9)(x - 4),

do you get 10x^2 - 13x?

I get

10x^2 - 49x + 36 totally different from 10x^2 - 13x

10x-9=3 = 10x=12 ; x-4=3 = x=7

 

[marshall1432]

I am so lost subhotosh khan. Can you help me with this step by step so I can figure this thing out? Thanks

 

[Deleted member 4993]

I am so lost subhotosh khan. Can you help me with this step by step so I can figure this thing out? Thanks

Go to the sites suggested by stapel - you'll find many problems worked out step-by-step.