If f(c) = 2x^2. +4 find f(3)

22

Step-by-step explanation:

SImply replace x with 3.

f(3)=2x^2 + 4

    =2(3)^2 + 4, (RE: PEMDAS, so first solve the exponent: 3^2)

    =2(9) + 4      (Multiply 9 and 2)

    =18 + 4         (Add)

    =22

70,000 + 6,000 + 800 + 30

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.