What should be done first to evaluate the expression? 4 + 8 ÷ 4 - 2 × 5

Add 4 and 8.
Divide 8 by 4.
Subtract 2 from 4.
Multiply 2 by 5.

Divide 8 by 4

Because is PEDMAS, division comes first.

divide 8 by 4

Step-by-step explanation:

PEMDAS or BODMAS

f(x) is going down by 4

step-by-step explanation:

(its either that or its going left by 4)

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.