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3 years ago

Simplify: 3x – 5 + 23x – 9 a. 2(14x -6) b. 3x(13x-6) c. 2(13x -7) d. 3x(13x - 5)

Mathematics

2 answers:

IceJOKER [234]3 years ago

6 0

Answer : 

Step-by-step explanation:

(a+b)(a-b) = a² - b²
a( b + c) = ab + ac
a (b - c) = ab - ac
a( b + c) + d( b + c) = (a + d) (b + c)

3x – 5 + 23x – 9 = 26x - 14

2 . 13x = 26x

2. -7 = -14

2 ( 13x -7) so answer is C

or another way :

a. 2(14x -6) = 28x - 12

b. 3x(13x-6) = 39x² - 18x

c. 2(13x -7) = 26x - 14

d. 3x(13x - 5) = 39x² -15x

so answer is C

Hope this helps ^-^

Vilka [71]3 years ago

4 0

Step-by-step explanation:

3x-5+23x-9

26x-5-9=26x-14

2(13x-7)

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