Multiply
(3x – 7)(3x – 5)
A. 9x^2 + 6x + 35
B. 9x^2 + 36x + 35
C. 9x^2 – 36x – 35
D. 9x^2 – 36x + 35
I said it was letter A, but I got it wrong...please help
9 x^2 -15 x -21 x + 15
which is
9 x^2 - 36 x + 15
I'm confused....that does not match any of the possible answers given
looks like a simple typo to me
+15 should be +35
surely you could have figured this out yourself
I was thinking that, but I wanted to be 100% sure....I always make sure I am making the right decision. There is no reason for you to act like I am incompetent. It's not hard to be nice to others. On the other hand, thank you for helping me clear this up. :)
To multiply two binomials, you can use the FOIL method. FOIL stands for First, Outer, Inner, Last.
To multiply (3x – 7)(3x – 5) using the FOIL method:
- First: Multiply the first terms of each binomial: 3x * 3x = 9x^2
- Outer: Multiply the outer terms of each binomial: 3x * -5 = -15x
- Inner: Multiply the inner terms of each binomial: -7 * 3x = -21x
- Last: Multiply the last terms of each binomial: -7 * -5 = 35
Now, combine the like terms from the FOIL steps:
9x^2 + (-15x) + (-21x) + 35
Simplify the expression further:
9x^2 - 36x + 35
Therefore, the correct answer is option D: 9x^2 - 36x + 35.