Solve $-2x^2-5x+3=0$

Solve the equations using the quadratic formula.

$$x^2 + 8x + 12 = 0$$

Why does hair turn gray?

The function of melanin in the skin is to

a. lubricate the skin.

b. prevent skin infections.

c. protect the skin from ultraviolet light.

d. reduce water loss.

e. help regulate body temperature.

Articular cartilages are located (a) at the ends of bones, (b) between the ribs and the sternum (breastbone), (c) between the epiphysis and diaphysis, (d) in the nose.

Solve each quadratic equation by factoring.

$$x^2-13x+36=0$$

Solve the equations using the quadratic formula.

$$x^2 + 8x + 15 = 0$$

Solve the system by inverting the coefficient matrix. x1 + 3x2 + x3 = 4, 2x1 + 2x2 + x3 = -1, 2x1 + 3x2 + x3 = 3

Solve the equation for x:

$$x^2- 3x - 10 = 0$$

Solve each equation by completing the square. x2 + 3x – 5 = 0

Find each product and write the result in standard form.

$$( - 7 - i ) ( - 7 + i )$$

Find each product and write the result in standard form. (8 - 4i)(-3 + 9i)

Find each product and write the result in standard form.

$$(-5+4i)(3+i)$$

Find each product and write the result in standard form. (-5 + 4i)(3 + i)