Question

Solve. x^2 – 4x = 0
a. x = 0 and x = –4
b. x = 2 and x = –2
c. x = 4 and x = 0
d. x = 0

Answer 1

do you know how to factor x^2-4x

Answer 2

yes, its x - 4, right?

Answer 3

\[x(x-4)\]
since
\[x(x-4)=x \cdot x - x \cdot 4=x^2-4x\]

Answer 4

so we have the following we need to solve
\[x(x-4)=0\]
which implies
x=0 or x-4=0

Answer 5

ok

Answer 6

and x = 4?

Answer 7

is it?