B. Shannon said she can find the factored form of a trinomial of the form x2 + bx + c from the factors of b. The sum of the factors of b will equal c.
Explain Shannon's error.

the answer is d. 75%

b. x + 1

step-by-step explanation:

i'am smart

c.

step-by-step explanation:

because first you have to add the 4x, 9x, and the 7x together and you get 20x and then you add the last numbers up and you get 5and then you put the subtraction sign in there and that's how you get the answer.