Question

rezolvati ecuatiile de forma x patrat=a (a=R)
a. X patrat= 432
b. X patrat= 144
c. X patrat=128
d. X patrat=324​

Answer 1

Explicație pas cu pas:

a)

x²=432 => x=±radical(432)=>x=±12radical(3)

b)

x²=144 => x=±radical(144) =>x=±12

c)

x²=128 => x=±radical(128)=>x=±8radical(2)

d)

x²=324 => x=±radical(324)=>x=±18