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Delvig [45]
3 years ago
10

Simplify. 7 (x-1) -2 (x-1)

Mathematics
1 answer:
FinnZ [79.3K]3 years ago
5 0

Answer: 5x-5

Step-by-step explanation:

7 (x-1) -2 (x-1)

7x-7-2x+2

Combine like terms:

7x-2x=5x

-7+2=-5

Answer simplified is 5x-5.

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Need help ASAP!!!!!!
trapecia [35]

Answer:

see explanation

Step-by-step explanation:

x² + 3x + 7 = 5 ( subtract 5 from both sides )

x² + 3x + 2 = 0 ← in standard form

(x + 2)(x + 1) = 0 ← in factored form

Equate each factor to zero and solve for x ( zero product rule )

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x + 1 = 0 ⇒ x = - 1

--------------------------------------------------------------

x² - 2 = - 2x² + 5x ( subtract - 2x² + 5x from both sides )

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(3x + 1)(x - 2) = 0 ← in factored form

Equate each factor to zero and solve for x

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------------------------------------------------------------

(x + 3)² + 4x = 0 ← expand left side using FOIL and simplify

x² + 6x + 9 + 4x = 0

x² + 10x + 9 = 0 ← in standard form

(x + 9)(x + 1) = 0 ← in factored form

Equate each factor to zero and solve for x

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4 0
3 years ago
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3 years ago
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