tashapineda12 tashapineda12
  • 22-06-2016
  • Mathematics
contestada

Which is a solution to (x − 2)(x + 10) = 13?

Respuesta :

xSamx
xSamx xSamx
  • 22-06-2016
You'll need to expand (x − 2)(x + 10) first,

(x − 2)(x + 10) = 13
[tex]x^2+8 x-20=13[/tex]
[tex]x^2+8 x+16=49[/tex]
[tex](x+4)^2=49[/tex]
[tex]x+4= \pm 7[/tex]
[tex]x=3 , x=-11[/tex]
Answer Link

Otras preguntas

a student measures the mass of an 8cm block of brown sugar to be 12.9g. what is the density of the brown sugar
where did farming begin and how did it spread?
the heights, x cm, of the 10 girls in an athletics team are such that sum of x (∈x) =1550 and ∈x∧2= 241250a- find the mean and varianceb- one girl, who is 173cm
Count on 5 tens 34, , ,
A box contains red and blue chips. There are 2 more blue chips than red chips. If the number of red chips is tripled and the number of blue chips is double, the
HELP ME PLS!put the verb in brackets in the correct tense.in some cases there is more than one possible answer.1.many people from the former communist bloc ____
what number has the same value as 50 tens??
House on mango street book. Write a description of a scene using language that engages the senses.set the mood in your introduction and carefully select word
What 1/11 as a decimal
63 = -3(1 - 2n) what does n equal?