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daser333 [38]
3 years ago
9

Someone help pls! 4x+3=5x+21

Mathematics
1 answer:
Romashka-Z-Leto [24]3 years ago
4 0

Answer:

x=-18

Step-by-step explanation:

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3 years ago
Can I have help with 43 and 44 I need to see how to do them thanks.
aliina [53]

Answer:

see explanation

Step-by-step explanation:

(43)

3x^{5} - 75x³ ← factor out 3x³ from each term

= 3x³(x² - 25) ← this is a difference of squares and factors in general as

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(44)

81c² + 72c + 16 ← is a perfect square of the form

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b² = 16 ⇒ b = \sqrt{16} = 4

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