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Butoxors [25]
3 years ago
14

Solve equation by factoring. X3 - 49x = 0

Mathematics
2 answers:
Sindrei [870]3 years ago
8 0

Answer:

x = - 7, x = 0, x = 7

Step-by-step explanation:

Given

x³ - 49x = 0 ← factor out x from each term

x(x² - 49) = 0 ← x² - 49 is a difference of squares, thus

x(x - 7)(x + 7) = 0

Equate each factor to zero and solve for x

x = 0

x - 7 = 0 ⇒ x = 7

x + 7 = 0 ⇒ x = - 7

Drupady [299]3 years ago
5 0

Answer: x=7 or x=-7

x(x+7)(x-7)=0

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Suma numerelor de forma a4b cu produsul cifrelor 24 este egala cu
lyudmila [28]

Answer:

Raspuns corect: b)

Step-by-step explanation:

a4b=24, a×4×b=24⇒a×b=6

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6 0
3 years ago
Which one of the following graphs is the graph of:3if -2 < x < 01if x = 0if 0 < x≤ 2f(x) =A.44B.4-²-(x + 1)?
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Given the piecewise function:

f(x)=\begin{cases}{3\text{ if -2}\leq x

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For f(x) = 1 if x = 0, the graph will have a closed dot located on the point (0, 1)

For f(x) = -(x + 1) if 0 < x ≤2, the graph will have a negative slope with an open dot on (0, -1) and closed dot on (2, -3)

ANSWER:

Graph B

8 0
1 year ago
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