Which expression is equivalent to 4+x+x+2x+5+3+x?

Combining like terms, we have

Next, add them

Therefore, ''" is equivalent to "."

B. 5x + 12.

Step-by-step explanation:

Whenever you see variables without a visible coefficient, imagine there is a '1' in front of the variable.

From here, you can combine like terms.

Remember, combine means to add.

Like terms are terms whose variables (such as x or y) with any exponents are the same (such as x² or y²).

I, therefore believe 5x + 12 is equal to 4 + x + x + 2x + 5 + 3 + x.

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.

i am unable to solve this problem

step-by-step explanation: