Math 1111 Test 1 Formulas
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Last updated 4:17 AM on 9/15/26
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9 Terms
1
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World Problem Translation Guide
is = ?
of = ?
more than = ?
Where to put x?
is = =
of = ×
more than = +
Where to put x? - Target unknown at the end.
2
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Imaginary unit
i = ✓-1 where i2 = -1
3
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Identity
(a + b)2 =
(a + b)2 = a2 + 2ab + b2
4
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-b is defined as…
✓-b = i✓b
5
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Quadratic Equation
ax2 + bx + c = 0
6
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AC Method
Multiply a * c
7
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Conditional
x = 5
(single solution)
8
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Identity
x + x = 2x
{x | x is all real numbers}
9
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Inconsistent
x + 1 = x + 2
(No solution)