What are the solutions of the quadratic equation below? x2−4x−6=0 x=2±2‾√ x=2±10‾‾‾√ x=−2±2‾√ x=−2±10‾‾‾√

explanation:

infrared radiation has wavelength in the range between 700 nm and 1 mm. lets' convert these values into scientific notation, keeping in mind that:

let's start from the lower value, we have:

(we moved the dot two places to the left, so we increased the exponent by 2 units, from -9 to -7)

the higher value is:

so, the range of wavelength of infrared radiation is:

3. 8,935,200 minutes

4. 227,040 feet