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Mice21 [21]
2 years ago
6

Please help it’s for a test it’s due in 30 minutes!!!!!!!

Mathematics
1 answer:
Vinvika [58]2 years ago
4 0

b=9

If b=9, then the i's will cancel out in the middle. When you multiply the two i's together, it makes 27i^2, and i sqaured is negative one so it would be negative 27. -18i and 18i would cancel, and you'll multiply 2 and 6 to get 12.

-27+12=-15

sorry, I edited it and meant b. Sorry about that! b=9

(2-3i)(6+9i)

12+18i-18i-27i^2

12+27i^2

12-27

-15

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Start by Listing Multiples

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</span>Method 2: By Prime Factors

List all prime factors of each denominator, and find the union of these primes.

8 : <span>2,2,2
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12 : <span>2,2,3
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3) </span>Make the denominators the same as the LCD

<span>9+<span><span>7×3 / </span><span>8×3</span></span>+<span><span>11×2 / </span><span>12×2

</span></span></span>4) Simplify. Denominators are now the same

<span>9+<span>21 / 24</span>+<span>22 / 24

5) J</span></span>oin the denominators

<span>9+<span><span>21+22 / </span>24</span></span>
6) Simplify

<span>9+<span>43 / 24

7) </span></span>Convert 43 / 24 <span>to mixed fraction

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8) </span></span>Simplify

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5 0
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Step-by-step explanation:

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3 years ago
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7 0
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