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Vanyuwa [196]
3 years ago
9

What is the following product? (x square root 7 - 3 square root 8) (x square root 7 - 3 square root 8)

Mathematics
2 answers:
bogdanovich [222]3 years ago
8 0

Answer:

7x^2 -6x√56 + 72

Step-by-step explanation:

(x√7 - 3√8)(x√7 - 3√8) ➡ (x√7 - 3√8)^

x^2 × 7 - 3x√56 - 3x√56 + 9×8 ➡ 7x^2 -6x√56 + 72

Semmy [17]3 years ago
3 0

Answer:

7 x² - 6 x √56 +72

Step-by-step explanation:

Let's consider the following equation.

(x√7 - 3√8).(x√7 - 3√8)

This is equal to a squared binomial.

(x√7 - 3√8)²

This is equal to the square of the first term, minus the double of the product of the first by the second plus the square of the second term.

(x√7)² - 2 × x√7 × 3√8 + (3√8)²

7 x² - 6 x × √(7.8) + 9 . (√8)²

7 x² - 6 x √56 +72

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defon
<h3>Answer:  2.4 pounds per dollar</h3>

Explanation:

We can set up the ratio

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Then divide both parts of that ratio by 5 so that the "5 dollars" becomes "1 dollar"

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Answer:

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Step-by-step explanation:

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Therefore, the factors of 35 are 1, 5, 7, 35.

Both 5 and 7 are inside the range of 1-6. So the probability of rolling a side that's a factor of 35 will be  \frac{2}{6} = \frac{1}{3} since there are two factors and 6 possible options.

This means, logically, there is a  \frac{4}{6} = \frac{2}{3}  chance of not rolling a factor of 35.

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