noll1310 noll1310
  • 01-06-2021
  • Mathematics
contestada

Solve 2x^2
+ x - 4= 0.
x2 +
= 0
DONE

Respuesta :

Аноним Аноним
  • 05-08-2021

[tex]\\ \sf\longmapsto 2x^2+x-4=0[/tex]

[tex]\\ \sf\longmapsto 2x^2+x=4[/tex]

[tex]\\ \sf\longmapsto 8(2x^2+x=4)[/tex]

[tex]\\ \sf\longmapsto 16x^2+8x=32[/tex]

[tex]\\ \sf\longmapsto (4x)^2+2(4x)(1)=32[/tex]

[tex]\\ \sf\longmapsto 4x^2+2(4x)(1)+1^2=32+1^2[/tex]

[tex]\\ \sf\longmapsto (4x+1)^2=33[/tex]

[tex]\\ \sf\longmapsto 4x+1=\pm\sqrt{33}[/tex]

[tex]\\ \sf\longmapsto 4x=-1\pm\sqrt{33}[/tex]

[tex]\\ \sf\longmapsto x=\dfrac{-1\pm\sqrt{33}}{4}[/tex]

Answer Link

Otras preguntas

When this 3-digit number is rounded to the nearest hundred it rounds down to 900.  The digit in the ones places is the fifth odd number that you count beginning
Is 119 a prime or composite number? If is composite, what prime numbers are factors of 119?
scientific notation of $125 billion
A single tree produces about 2.6 x 10^2 lb of oxygen each year.The Amazon rainforest has about 3.9 x 10^11 trees.About how many pounds of oxygen are produced in
The scientific notation of 2500?
what is the expanded notation for 50
which number is a factor or 20 but not a multiple of 2?
When this 3-digit number is rounded to the nearest hundred, it rounds to 200.  Rounded to the nearest ten, this number rounds to 200.  The sum of the digits of
if RG=7x+3, GQ=3x+13, and RQ=56, then find the value for x, RQ, and GQ.
What two task need to be done through disk management in order for the operating system to use the hard drive?