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qaws [65]
3 years ago
6

What is the product of (x+9)(x-9)

Mathematics
2 answers:
Verdich [7]3 years ago
8 0

Answer:

x^2 - 81

Step-by-step explanation:

There is a formula called the difference of squares, which is

(a+b)(a-b) = a^2 - b^2

ivolga24 [154]3 years ago
6 0

Answer: 9x²-81x

Step-by-step explanation:

1. Reorder the terms like this: (9x)• (x-9)

2. Remove unnecessary Parentheses like this: 9x•(x-9)

3. Distribute 9x through the Parentheses like this:

9x would become 9x² (because I combined 9x and 9x which become 9x²)

(x-9) would become -81x (so if you need further explanation I took the (x-9) and made it -9x then multiplied it by the 9x because of distributive property.)

The solution: 9x²-81x

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Kryger [21]

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In reflections the x axis is the opposite only

8 0
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23 and 24 I need help please
Gnoma [55]

Answer:

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Step-by-step explanation:

24÷3=8

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vova2212 [387]

Answer:

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2 years ago
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Basile [38]
Luckily for us, the diagram already divided this figure into separate polygons. What I will be explaining is basically the addition of the areas of all the separate polygons. The area of the uppermost triangle is:

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The next polygon we will be taking the area of is the parallelogram with the base length of 20 and the height of 16.

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pickupchik [31]

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