Provide an appropriate response.Solve the equation by factoring: x2 - 20 = x
A. x = -4, 5
B. x = 4, -5
C. x = -4, -5
D. x = 1, -19
Answer: A
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Write the complex number in the form a + bi.4(cos -135° + i sin -135°)
A. -2
- 2
i
B. - 
- 
i
C. - 
+ 
i
D. -2
+ 2
i
Write the equation of the line whose graph is shown.
A. y = - 
x - 7
B. y = -4x - 7
C. y = 4x - 7
D. y = - 
x - 4
Provide an appropriate response.If A is a 3 × 5 matrix, B is a 5 × 7 matrix, C is a 7 × 11 matrix, D is a 5 × 7 matrix, which of the following matrix products are defined? Give the size of each answer if it is defined.(a)A × B × C(b)B × C × D(c)A × D × C(d)A × B × D
What will be an ideal response?
Determine the appropriate rotation formulas to use so that the new equation contains no xy-term.x2 + 2xy + y2 - 8x + 8y = 0
A. x = 
x' - 
y' and y = 
x' + 
y'
B. x = 
x' - 
y' and y = 
x' + 
y'
C. x = 
(x' - y') and y = 
(x' + y')
D. x = -y' and y = x'