Let a(x)=x^4-8x^2+2x+3 and b(x)= x

what are the options? ?

step-by-step explanation:

75

step-by-step explanation:

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:

answer is because 4×10=40

and 98×4= is 392

40,392