Question

Expand and simplify x(x-3)(x+5)

Answer 1

x^3+2x^2-15x

Explanation:

Ohk there various methods and steps which can be followed,but let's simplify

In the first method,

Lets put off the brackets hence we will multiply,simplify the equations in the brackets,which would be as followed:

x(x-3)(x+5)

Let's Start with solving the bracket equation,which would be-

(x-3)(x+5)=x(x+5)-3(x+5)=x^2+5x-3x-15

=x^2+2x-15

While multiplying the above equation we got with `x',we get:

x(x^2+2x-15)=x^3+2x^2-15x(Hence solved)

Or/otherway/otherwise:

x(x-3)(x+5)=[x(x-3)](x+5)=(x^2-3x)(x+5)

=x^2(x+5)-3x(x+5)=x^3+5x^2-3x^2-15x

=x^3+2x^2-15x(Solved)