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

Write the phrase "the product of 19 and a number" as a mathematical expression.A 19 + xB) 19/xC) 19 x(D) 19 -x​
(y 2 - 3)(y 4 - 6y 2 + 9) Find the product.
7. Suppose that y varies inversely with x. Write an equation for the inverse variation, y = 4 when x = 6 A у x = 2 B х y = 24 с 24 y = OD y = 2x
Plzzzzz help ASAP!!!!!! Solve: x/32=15/20
The graph below represents which of the following functions?
An emerging adult who makes significant gains in postformal thinking is more likely to operate from the core belief that her beliefs are:
for each of the following express the first quantity as a percentage of the second quantity 1 year ' 4 month​
Find the product. (7x+2)(x−1) A 8x+1 B 6x+3 C 7x2−5x−2 D 7x2−2
three babies A,B and C cry out at interval time. Baby A cries out at every 20 mins, while B cries out at every 30 mins and C cries out at every 40 mins. if they
Please help me with this geometry question:((