Question

Help Plz

Answer 1

how do I Tag can I do @?

Answer 2

@pandasurvive OH!!!!! THAT WORKS!!!!!

Answer 3

@Hero

Answer 4

hello?

Answer 5

\(\dfrac{x^2 - 3x -10}{x^2 + 2x -35 } \cdot \dfrac{x^2 + 4x-21}{x^2 + 9x + 14}\)

Answer 6

First we have to factor each one of those trinomials.

Answer 7

ok

Answer 8

Let us begin with \(x^2 -3x - 10\) Any ideas on how to factor this?

Answer 9

um, we just started this lesson and I am not very good at it

Answer 10

Well first we have to find two numbers that multiply to get -10, yet add to get -3. I wonder if it is possible for you to think of two such numbers. @Amythehedgehog

Answer 11

um, this is confusing

Answer 12

@Amythehedgehog
What are some of the factor pairs of 10? We know 10 and 1 are two factors? What are some others?

Answer 13

5

Answer 14

2

Answer 15

factors of 3.....1

Answer 16

Yes, 5 and 2 is the other factor pair of 10. Let's deal with the "three" this way I wonder if you can solve this:

\(a \times b = -10\)
\(a + b = -3\)

What would be a and b in this case?

Answer 17

O-O um 1 + 2 = 3

Answer 18

The a and b also has to work for \(a \times b = -10\). Hint: the a and b involves the 5 and 2 you found earlier. We just need to figure out if the five or two is positive or negative. See if you can figure out which combination would work for both equations:
\(a \times b = -10\)
\(a + b = -3\)

Answer 19

3 x 1 = 3

Answer 20

Once again @Amythehedgehog the values for a and b involve the 5 and 2 you found earlier. There is some combination of -5, 5, 2, or -2 that will work.

Answer 21

2?

Answer 22

combining is adding right?

Answer 23

sorry I am not a smart girl

Answer 24

I am only 13

Answer 25

Let's do this one equation at a time. What two numbers do you think would work for the following equation: \(a \times b = -10\). Keep in mind, the ten is NEGATIVE and you should respond with TWO numbers. One for a and one for b. So your response should be something like

\(a =\) (some number)
\(b = \) (some other number)

Answer 26

um, um, I am still confused

Answer 27

What are you confused about?

Answer 28

how do I multiply something to get a negetive number

Answer 29

If you multiply a positive number with a negative number, the result is a negative number. For example, \(-7 \times 4 = -28\)

Answer 30

O-O

Answer 31

@Amythehedgehog the ball is in your court now.

Answer 32

what?

Answer 33

Okay, let's do it this way. I'll show you how to factor something like \(x^2 - 7x + 6\)

The first step is to find two numbers that multiply to get \(-6\) yet add to get \(7\).

In other words, we need to solve this equation:
\(a \times b = 6\)
\(a + b = -7\)

After some trial and error we see that the only two numbers that will work is \(-6, and -1\)

Answer 34

um, maybe I'll just ask my parents for help, never mind

Answer 35

Good luck @Amythehedgehog. Keep at it. I'm sure you will understand how to solve these problems eventually. Have a good one.

Answer 36

thank you for trying to help @hero