Please help! find the value of x in each case.

225x²+4=0

225x²=0-4

225x²=-4

x²=-4/225

x=±√-4/225

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:

0.85% : )

step-by-step explanation: