Write an equivalent to 2a+(8a+5b) by combing terms

Like terms have the same variable (x,y) and power/exponent.

2a + (8a + 5b)   The only like terms you can combine are 2a and 8a, because they have the same variable of "a" and an exponent of 1

10a + 5b

55? i think maybe

step-by-step explanation:

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.