Double Digit Multiplication Madness
15 X 11
165
82
64
-12/4
-3
3b + 9 = -18 (solve for b!)
b = -9
v2 + 2v - 8 = 0
X = (2, -4)
16 x 12
192
33
81
-21/7
-3
2u + 7 = 5 (solve for u!)
u = -1
X = (6, -2)
21 X 14
294
63
216
2(1+2) - 3(2-3)
9
3a - (-1) = -5 (solve for a!)
a = -2
n2 = 9n - 20
X = (5, 4)
25 x 25
625
26
64
-13 + 2(2+8) - (-)14
21
3z - 2 = -26 (solve for z!)
z = -8
4a2 - 8 = a
X = 1(+,-) √129/8
36 X 49
1764
44
256
-2(4) + 16/4 - (122 - 124)
-24
-2u + (-1) = -13 (solve for u!)
u = 6
4x2 + 4x - 8 = 1
X = -1 (+,-) √10/2