Valeria tried to evaluate an expression. Here is her work: 8+12÷442 = 8+12÷416 Step 1 = 20÷416 Step 2 = 516 Step 3 = 80 Step 4 Is Valeria's work correct?

Valerie's work is incorrect

Step-by-step explanation:

We solve the above question using the order of PEDMAS

P = Parentheses

E = Exponents

D = Division

M = Multiplication

A = Addition

S = Subtraction

Valeria tried to evaluate an expression. Here is her work:

= 8+12÷416

Let's solve this

From PEDMAS above, Division comes before Addition.

Hence:

Step 1: Division

8 + (12 ÷ 416)

Step 2: Addition

Hence, Valerie's work is incorrect

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.

a is the right answer