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Colt1911 [192]
3 years ago
5

Factor the common factor out of –12 + 15x

Mathematics
1 answer:
Sonja [21]3 years ago
3 0
The common factor is 3. You would write it out as... 3(5x-4)
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Step-by-step explanation:

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Answer:

Step-by-step explanation:

(5, -30)  (6, -36)

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y + 30 = -6(x - 5)

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Simplify 8^4 •8^2 to an exponential expression
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3 years ago
Solve.<br><br> −7x = x2 + 12
adelina 88 [10]

Answer:

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Step-by-step explanation:

- 7x = x^2 + 12

Take all terms to one side of equation.

x^2 + 7x + 12 = 0

Find which 2 numbers multiply to give 12 and add to give 7.

a × b = 12

a + b = 7

a = 4

b = 3

Split the middle term using these 2 numbers.

x^2 + 4x + 3x + 12 = 0

Factorise each pair of terms separately.

x ( x + 4 ) + 3 ( x + 4 ) = 0

Bring out common factor of ( x + 4 ) and factorise.

( x + 4 ) ( x + 3 ) = 0

Using the Null factor law, make the expressions in each pair of parentheses equal 0.

x + 4 = 0

x = - 4

AND

x + 3 = 0

x = - 3

THEREFORE:

x = - 4 , x = - 3

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Which of the following is the solution to the equation 2x = 3? Explain your
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