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pogonyaev
3 years ago
14

Using FOIL method. Multiply the terms. (X^2 -7)(x^2 -4)

Mathematics
1 answer:
murzikaleks [220]3 years ago
4 0

Answer:

x^4-11x^2+28

Step-by-step explanation:

  1. Set it up

x^2(x^2-4) -7(x^2-4)

    2. Multiply

x^4-4x^2-7x^2+28

    3. Simplify

x^4-11x^2+28

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Math problem help me
Ratling [72]

Answer:

y=3x+2

Step-by-step explanation:

To find the equation, use the slope-intercept formula:

y=mx+b

m is the slope and b is the y-intercept. Now, it'll really help to draw a line through the points, connecting them. If you look at point (0,2), we can see that this is the y-intercept (where a point sits on the y-axis when x=0). You can insert this into the equation by taking the y value:

(0,2)\\y=mx+2

Now, take any two points to find the slope. To make it easier, I'll use (1,5) and (0,2). Use the slope formula for when you know two points:

\frac{y(2)-y(1)}{x(2)-(x1)} =\frac{rise}{run}

Rise over run is the change in the y-axis over the change in the x-axis. Insert values:

(1(x1),5(y1))\\(0(x2),2(y2))\\\\\frac{2-5}{0-1}

Solve:

\frac{2-5}{0-1}=\frac{-3}{-1}

Since both are negative, the result is a positive:

\frac{-3}{-1}=\frac{3}{1} =3

Insert this into the equation as m, the slope:

y=3x+2

Done.

6 0
3 years ago
Find the area of this parallelogram
eduard
Area is base x height
4x2=8 cm
3 0
2 years ago
Find the value of x. If necessary, write your answer in simplest radical form.<br> 12<br> 9
Kobotan [32]

Answer:

3√7

Step-by-step explanation:

9²+B²=12²

simplify

81+B²=144

minus the 81

B²= 63

3 0
2 years ago
51 is 17% of what number
Juliette [100K]
Answer is 300
first change the 17% to decimal value, which is 0.17
Put everything in equation: 51=0.17x
then solve for it
51=0.17x
x=51/0.17
x=300
the number is 300
3 0
3 years ago
The Statue of Liberty, Grand Canyon, and Empire State Building are all examples of __________ good.
makkiz [27]

Answer: C

Explain: The Statue of Liberty, Grand Canyon, and Empire State Building are all examples of INDUSTRY Good.

7 0
3 years ago
Read 2 more answers
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