Question

Which shows one way to determine the factors of x3 - 9x2 + 5x – 45 by grouping?
O x2(x – 9) - 5(x – 9)
O x2(x + 9) - 5(x + 9)
O x(x2 + 5) – 9(x2 + 5)
O x(x2 - 5) - 9(x2 – 5)​

Answer 1

Answer:

option 3rd true x(x^2+5)-9(x^2+5)

Answer 2

x^3-9x^2+5x-45

=x^3+5x-9x^2-45

=x(x^2+5)-9(x^2+5)