Question

Determine real roots: (3x^2+27)(x^2-16)
i don't understand how to solve this, please help ! :)

Answer 1

What values for x make the expression equal to zero?

Answer 2

how do i figure that out ?

Answer 3

typos...

Answer 4

i know, but what i mean is that what method or technique is used here to figure it out

Answer 5

when
(x^2-16) = 0
or
(3*x^2+27) =0

Answer 6

that's it really...solve for x

Answer 7

x^2=16
x=?

x^2 =-9
x=?

Answer 8

glad I could help