6th grade math , help me please :)

5x+10

12x+6

18n -45

Step-by-step explanation:

5(x+2)

5x+5*2

5x+10

3(4x+2)

12x+6

9(2n-5)

18n -45

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▹ Answer

a) 5x + 10

b) 12x + 6

c) 18n - 45

▹ Step-by-Step Explanation

a) 5 * x =5x

5 * 2 = 10

5x + 10

b) 3 * 4x = 12x

3 * 2 = 6

12x + 6

c) 9 * 2n = 18n

9 * -5 = -45

18n - 45

Hope this helps!

- CloutAnswers ❁

Brainliest is greatly appreciated!

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x= -3 and

step-by-step explanation:

to find the roots of a cubic, use division or factoring to find the factors then set equal to 0. as this is a difference of cubes, it factors into

where a is the cube root of .

here   this is 27 and the cube root of 27 is 3. so we write using the form:

.

set each factor to 0 and solve for x.

x-3=0

x=3

the quadratic expression does not factor and must be solved using the quadratic formula.

where a = 1, b=3, and c=9

this cubic has two complex roots.