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goblinko [34]
2 years ago
11

Chapter 4: Explain how you can

Mathematics
1 answer:
xxTIMURxx [149]2 years ago
3 0

x-intercept(s):  

( 7 , 0 )   , (-1,0)

y-intercept(s):  

(0,-7)

Step-by-step explanation:

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2 years ago
Solve the following quadratic by factoring.
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Answer:

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Step-by-step explanation:

We can reverse the FOIL (First, outside, inside, last) method to break down the equation. The question is asking to solve by factoring so you want to find the right combination of numbers this equation can be broken down into:

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Because we want x squared, x needs to be multiplied by itself, so we can put x in the first slot for each.

(x + or - ?) ( x + or - ?) = 0

Then we need to find numbers that could be added to get -3 and multiplied to get -4. The only set of numbers that works for this is -4 and 1. Note that the sign you put in front of each number has an impact on your answers. With this we get:

(x - 4) (x + 1) = 0

To test that this is equal to the original equation, simply multiply it out using FOIL.

x * x = x^2

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x * -4 = -4x

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Putting each component into an equation:

x^2 + x - 4x - 4 = 0

Simplifying:

x^2 - 3x - 4 = 0

Once we are sure it is still the same equation, we find the solutions. We know 0 multiplied by anything equals 0, so to get 0 as the answer, one of the sets in the parentheses must equal 0. (It doesn't matter what the other one is as long is one equals 0)

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You can also check your answers by plugging them back into the original equation.

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3 years ago
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Answer:

-2x+2

Step-by-step explanation:

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2 years ago
Read 2 more answers
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