Which of the following cannot be solved using the quadratic formula?

Equation -3x² - x + 3 = -3x²  can not be solved using quadratic formula.

Step-by-step explanation:

1. -3x² - x + 3 = -3x²

Simplify above equation,

-3x² + 3x² - x + 3 = 0

or  -x + 3 = 0  , Sine x² terms cancelled each other.

Hence this equation can not be solved using quadratic formula.

2. 0 =x² , yes here we can use quadratic formula

3. 0 = 2x²-1

Simplifying the above equation,

0 = 2x² - 1

1 = 2x²

x² =

Hence we can use quadratic formula here.

4. x²+3x-2 = 4x²- 5x - 1

Simplifying given equation,

x²+3x-2 = 4x²- 5x - 1

or  x² - 4x² +3x +5x -2 + 1 = 0

or  -3x² + 8x - 1 = 0

since x² term is here, hence we can solve this using quadratic formula.

well there are two answers for that.

1: you need 120 ones then that will equal up to 120.

2: you could also do one 100 and 2 tens.

those are the answers that i have thought of.

step-by-step explanation:

there is a formula i can give you:

it is r^2*n*sin(360/n) divided by 2 where r represents the "radius" and n is the number of sides.

plug them in:

(10sqrt(3))^2*6*sin(360/6) divided by 2

100*3*6*sin(60) divided by 2

900*sin(60)

900*sqrt(3)/2

450*sqrt(3)

approx is 779.4 cm^2