YunoMatashi1029
YunoMatashi1029 YunoMatashi1029
  • 04-07-2019
  • Mathematics
contestada

The problem is in the pictures, please show step by step how to do it. Thanks! :)

The problem is in the pictures please show step by step how to do it Thanks class=

Respuesta :

sumjok
sumjok sumjok
  • 04-07-2019

Answer:

-4,-5/2

Step-by-step explanation:

2x^2+3x-20 =0

2x^2+8x-5x-20 =0

2x(x+4)-5(x+4) =0

(x+4)(2x-5) =0

Either,

x+4=0

x=-4

Or,

2x-5=0

2x=5

x=5/2

Answer Link
konrad509
konrad509 konrad509
  • 04-07-2019

[tex]2x^2+3x-20=0\\2x^2+8x-5x-20=0\\2x(x+4)-5(x+4)=0\\(2x-5)(x+4)=0\\x=\dfrac{5}{2} \vee x=-4[/tex]

Answer Link

Otras preguntas

The novel Uncle Tom’s Cabin, which effectively the unfairness toward black people, was a major influence in the antislavery movement. (A) portrayed…strengthenin
A moving company is trying to store boxes in a storage room with a length of 5 m, width of 3 m and height of 2 m. How many boxes can fit in this space if each i
If the sun ran out of energy what would happen to the energy resources on earth
I am two numbers, the sum of my numbers is 100, the difference between my two numbers is 30,
I am two numbers, the sum of my numbers is 100, the difference between my two numbers is 30,
What are some 5th grade science words that start with y
The function f(t) = −5t 2 + 20t + 60 models the approximate height of an object t seconds after it is launched. How many seconds does it take the object to hit
Convert 79 oz to _____ g Round answer to the nearest whole gram.
Patrick ate 3/5 of a small pizza on Friday night. For lunch on Saturday , he ate 1/2 of the leftover pizza. How much pizza did he eat for lunch on Saturday?
The ratio of Sam age to Hanks is 5 to 3. If the sum of their ages is 24, how old is Hank?