Question

Please help solve! I have the first step but don't know what to do next!!
1. x^3-5x=0
I did x^3=5x first step
2. 2x^2-7x=15
I did 2x^2-7x-15=0 first step

Answer 1

\(\bf x^3-5x=0 \implies x(x^2-5) = 0\)

Answer 2

\(\bf 2x^2-7x=15 \implies 2x^2-7x-15 = 0\)

Answer 3

x^3-5x=0
x(x^2-5)=0
either x=0 or x^2-5=0
or x^2=5 means x= sqrt(5) or -sqrt(5)

Answer 4

next step on the second is to factor it to 2 binomials

Answer 5

make that :