Find the least common multiple (lcm) of each pair of numbers:
lcm: 2,8
lcm: 3,4
lcm: 6,8

yes the total will be same because in both of them the expression.is rearranged but their sign remains the same hence it hss just been shuffled

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: