4). (2 points each) Solve these "square" equations:

a). x2 = 25 X = ______	b). x2 + 4 = 40 X = ______
c). x2 - 4= 60 X = ______	d). a2 + 2 = 83 X = ______
e). 40 - x2 = 4 X = ______	f). 10 - x2 = 1 X = ______
g). b2 - 9 = 40 X = ______	h). d2 + 20 = 29 X = ______

5). (2 points each) Use your calculator for these:

a). 4.42 = ________	b). 8.22 = ________
c). .012 = ________	d). 1.042 = ________
e). 44.42 = ________	f). 66.22 = ________

6). (2 points each) Find these cubes:

a). 33 = _________	b). 43 = _________	c). 53 = _________
d). 13 = _________	e). 63 = _________	f). 2.53 = _________