escarletcypress
escarletcypress escarletcypress
  • 25-10-2019
  • Mathematics
contestada

solutions of x2 + 13x + 30 = 0 by factoring.

Respuesta :

ranikashyab066 ranikashyab066
  • 26-10-2019

Answer:

x = -10 or x = -3

Step-by-step explanation:

Here, the given equation is

[tex]x^{2}  + 13x + 30 = 0[/tex]

The given equation can be solved by the method of SPLITTING THE MIDDLE TERM

Split 13 in such a way that sum of the terms = 13

and product of the terms = 30

So, the given equation becomes [tex]x^{2}  + 10x + 3x + 30 = 0[/tex]

Here, 10x+ 3x = 13x and 10 x 3 = 30

Now, simplifying the equation,

[tex]x(x+10) + 3(x + 10) = 0 \\(x+3) (x+10) =0[/tex]

⇒ either (x+ 10) = 0 ,or (x+ 3) = 0

⇒ x = -10 or x = -3

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