Question

Expand the expression x(5x+3)-1 and find its values for x=3
plz answer​

Answer 1

Answer:

Here is how to expand it. Write it like this: (. x. -. 5. ). ^. 3

Hah, jokes apart, here is the solution.

Use the identity : (a-b)^3=a^3+b^3+3ab(a+b).

(x-5)^3=x^3-125-15x(x-5)

=x^3-15x^2+75x-125

Answer 2

Step-by-step explanation:

6x + 3x - 1

9x - 1

if x = 3 , then ,

9(3) -1

27-1

26 Ans

hope it helps you