kendraisbrooks3989 kendraisbrooks3989
  • 25-09-2018
  • Mathematics
contestada

One positive number is 8 more than another. The sum of their squares is 130. Find both numbers

Respuesta :

tramserran
tramserran tramserran
  • 25-09-2018

first number: x

second number: x + 8

(x)² + (x + 8)² = 130

x²  + x² + 16x + 64  = 130

    2x² + 16x  + 64 = 130      

       x² + 8x + 32 = 65       divided both sides by 2

         x² + 8x - 33 = 0       subtracted 65 from both sides

        (x + 11)(x - 3) = 0

x + 11 = 0     x - 3 = 0

 x = -11          x = 3              disregard -11 because it's not a positive number

second number: x + 8   = (3) + 8   = 11

Answer: 3 and 11

Answer Link

Otras preguntas

Which statements about the war in Vietnam are true? Choose all answers that are correct. a. The Soviet Union and communist China refused to aid North Vietnam in
the period from 1865 to 1900 known as the gilded age was marked by?
Whose ideas are most closely associated with the term "dictatorship of the proletariat"?
Part of the American colonists' anger towards Britain prior to the American Revolution stemmed from the fact that a. England began selling lands west of the est
Why might people want to blame a minority group for most of their country’s problems?
There are 24 tiles in a stack.Each tile is 8mm thick.How high is the stack in metres?
Solve: 3x + 1 = 3 With working out
If 75% is £45 what is the full cost?
What were some of the effects of King Philip's War?
write 80 as a product of prime factors