Which shows one way to determine the factors of x3 + 4x2 + 5x + 20 by grouping? x(x2 + 4) + 5(x2 + 4) x2(x + 4) + 5(x + 4) x2(x + 5) + 4(x + 5) x(x2 + 5) + 4x(x2 + 5)

Option (b) is correct

The factored form of polynomial by grouping terms is

Step-by-step explanation:

Given  polynomial  

We have to determine the factor of given polynomial using grouping.

Grouping is done by taking greatest common factor common  from different terms.

Consider the given polynomial

Here, we can take common from first two terms and 5 common from last two terms, we get,

Thus, the factored form of polynomial by grouping terms is

Thus, Option (b) is correct.

step-by-step explanation: