lisapressley2001 lisapressley2001

03-01-2017
Mathematics

contestada

8. Find all the real fourth roots of 256

Respuesta :

surjithayer surjithayer

03-01-2017

x^4=256
x^4-256=0
(x^2)^2-(16)^2=0
(x^2+16)(x^2-16)=0
either x^2+16=0
it gives complex roots.
or x^2-16=0
or x^2-4^2=0
(x+4)(x-4)=0
either x+4=0,x=-4
or x-4=0
x=4

Answer Link

Otras preguntas

Factor by grouping 5x+15+xy+3y

how is dimensional analysis useful in calculations that involve measurements

For what value of a is a(2x+3)=9x+15+x an identity?

What happens to water molecules during the boiling process?

Factor each completely? A2-7a-18

calculate the average speed of spacecraft orbiting mars

what were the main affirmations of the declaration of the rights of man and the citizen

write four numbers that round to 700,000 when rounded to the nearest hundred thousand

Find the missing number in the patter explain your reasoning 12,24,72,288

List two non-SI units for volume, and explain how they relate to the cubic centimeter.