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3 years ago

Expand and simplify x(x − 3)(x + 5)

Mathematics

1 answer:

konstantin123 [22]3 years ago

6 0

Answer: x³+2x²-15x

Step-by-step explanation:

1. Expand

(x²-3x)(x+5)

2. Use the FOIL method: (a+b)(c+d)=ac+ad+bc+bd

x³+5x²−3x²−15x

3. Collect like terms

x³+(5x²−3x²)−15x

4. Simplify

x³+2x²-15x

Hope this helps, have a BLESSED and wonderful day! ;-)

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Can someone help me put this equation in standard form I give you brainliest !(and a explanation )

natali 33 [55]

Answer:

$y = \frac{1}{2}x$

Step-by-step explanation:

First plot (3,1). Then use the slope to create the second point. Go up 1, right 2.

Next draw a line connecting the points. The line touches the y-axis at 0.

$y = mx + b$ is the form you use.

~theLocoCoco

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3 years ago

Find the average rate of change between f(-7) and f(-1) in the function f(x)=x^2+2x -8

Viktor [21]

Solve the equation by replacing x with -7 and then -1.

Then subtract the two to find the difference and divide that by the difference between -7 and -1.

f(-7) = -7^2 + 2(-7) -8 = 49 -14 -8 = 27

f(-1) = -1^2 + 2(-1) -8 = 1 -2 - 8 = -9

Difference between 27 and -9 = -36

Difference between -1 and -7 = -6

Rate of change = -36 /-6 = 6

3 0

4 years ago

Which equation can be used to find the number of fish in the pond on June 1?

olga_2 [115]

Answer: The required equation is $f-52=63$ and the number of fishes in the pond on June 1 = 115

Step-by-step explanation:

Given: The number of fishes in pond on July 1 = 63

Also, it is said that the number of fishes in pond on July 1 is 52 fewer(lesser) than the number of fishes in pond on June 1.

Let f be the number of fishes in pounds on June 1.

then the required equation will be

$f-52=63$

Now, add 52 on both the sides of the equation, we get

$f=63+52\\\Rightarrow\ f=115$

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4 years ago

A scale on a blue print drawing of a house shows that 66 centimeters represents 33 meters. What number of centimeters on the blu

aksik [14]

To find the ratio of centimeters to meters you need to divide 66 by 33 to get 2.
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3 years ago

Work out the value of 17-5b when b=1

Artist 52 [7]

Answer:

Step-by-step explanation:

17 - 5b

b = 1

17 - 5(1)

17 - 5

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3 years ago