exam
Maths Puzzle
Numerical Ability
can you help me solve and check?
2/5=x-2/20
Read Solution (Total 0)
exam Other Question
(30-i)-(18+6i)+30i
Solve the equation by finding all real roots.
x^3-7x+15x-9=0
i have this
1 -7 15 -9 /(divided by) 1.
x^2-6x+9
(x+1) (x^2-6x+9)
it says factor again and where is the soultion