Solve these Biquadratic Equations ina a word docuement, using the equation editor. You can use your ntebook to do the calculations, and Wiris to check the answers, but you have to send me all the steps of the resolution in the document.
a) x4 − 10x2 + 9 = 0
b)
c) x4 − 61x2 + 900 = 0
d) x4 − 25x2 + 144 = 0
e) x4 − 16x2 − 225 = 0
f) 
