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

If a=3 and b=5, what is the value of 3a + b to the power of 2?
Pentane, C5H12, will react as shown below: ____C5H12(l) + ____O2 --- ______CO2 +_______ H2O H20(g) 1. Balance the equation above by putting coefficients into ea
Fill in the gaps: .... to the legendary film director Orson Wells, music accounts .... half the work in a movie, mostly without the audience even knowing the na
How many $0.21 pencils can be purchased for $7.00? Show your work.
what is tn=6n-9.5,t15
make a short dialogue about the introduction!
who do scholars believe first wrote Beowulf
The atomic number of an atom identifies the number of protons in its nucleus. If the overall charge on the atom is neutral, what must the atomic number also ide
The Middle Colonies were most known for its what of different religions?
describe why the bureaucratic personality can be dangerous.