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Inessa [10]
3 years ago
13

(9x-9)(9×+9), your finding the difference between two squares. im have some trouble in how to solve it.​

Mathematics
1 answer:
stich3 [128]3 years ago
8 0

Answer:

81x² - 81

Step-by-step explanation:

Step 1: Write expression

(9x - 9)(9x + 9)

Step 2: Expand by FOIL

81x² + 81x - 81x - 81

Step 3: Combine like terms

81x² - 81

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pishuonlain [190]

Applying the trigonometry ratios, we have:

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<h3>What are the Trigonometry Ratios?</h3>

The trigonometry ratios are used to find a length or angle in any right triangle. They are:

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a. ∅ = 32°

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d.  ∅ = 27°

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Apply SOH:

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Learn more about the trigonometry ratios on:

brainly.com/question/10417664

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