He SHOULD have gotten 3+ 7i
(x-1-sqrt2)(x-1+sqrt2)(x-2-sqrt5)(x-2+sqrt5) this equals x4-6x3+6x2+6x+1
Rationalize the denominator by multiplying by (1-3i)/(1-3i) to get (9+13i)/10
x^2 + bx + c when x = 0 f(x)=4 so c = 4
x^2 + bx + 4 when x = 1 the value is -10
1^2 + b + 4 = -10
b = -15
f(x) = x^2 -15x+4
Arc TU is 72/360 ths of the entire circle
pi * 2r = entire circle circumf
72/360 * pi * 2r = 6pi
r = 15 units
Vertical asymtopes when denominator = 0
(x-1)(x-2) = x^2 -3x+2 a = -3 b = 2
8 = 23
(23)x+1 = 23x+3
= 23x * 23
= 7 * 8 = 56
I will assume these are only positive numbers
A = 16 B = 96 Difference = 80
If the numbers can be negative
A = -96 B = 96 Difference = 192 **** edited ****
Need a little more info here !
19 = 1/2 d given Multiply both sides by 2
2*`19 = 2 * 1/2 d
38 = d d book = 38 oz
