Question

Can someone please help me fix this math question?
I will give a medal and will fan...
Question -

Answer 1

Factor by the trinomial method -
x^2 – 8x + 7
My steps -
Step 1: Find a, b, and c
A = 1
B = -8
C = 7
Step 2: Use b and c to determine what two numbers will go at the end of the two parentheses.
(x -/+ ?)(x -/+ ?)
Find factors of c (7) that add up to b (-8). Since 7 can be written as the product of 7 and 1, and since 7+1=8, then use 7 and 1.
Step 3: Answer format: (variable _ #)(variable _ #)
Write in the two numbers found in Step 2 above:
(x+7)(x+1)
Answer: x2 – 8x + 7 = (x+7)(x+1)

Answer 2

What my teacher said was wrong -
"But the 8 is negative!"

Answer 3

@bmk614 do you think you could try to help me fix this quesion?

Answer 4

Well, what does (x+7)(x+1) give you?

Answer 5

You can check your answer by using the FOIL method.

Answer 6

\[x^2+8x+7\], notice that the 2nd term is positive where the original equation 2nd term is negative -- hence, your answer is wrong.

Answer 7

oh okay... would you mind helping me to fix it?

Answer 8

(x-7)(x-1)

Answer 9

Is that what the answer needs to be?