Apply the distributive property.(x + y - 2)(-7xy)

A. 7x2y - 7xy2 +14xy
B. -7x2y + 7xy2 +14xy
C. -7x2y - 7xy2 +14x2y2
D. -7x2y - 7xy2 +14xy


Answer: D

Mathematics

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Find all the first order partial derivatives for the following function.f(x, y) = 

A. fx(x, y) = - ; fy(x, y) = - 
B. fx(x, y) = - ; fy(x, y) = - 
C. fx(x, y) = - ; fy(x, y) = - 
D. fx(x, y) = ; fy(x, y) = 

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Write the slope-intercept form of the equation for the line passing through the given pair of points.(-3, -7) and (0, -5)

A. y = x - 5
B. y = - x - 5
C. y = x - 5
D. y = - x - 5

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Find the product.(2x - 6)(x + 5)

A. x2 - 30x + 4 B. x2 + 4x + 3 C. 2x2 + 3x - 30 D. 2x2 + 4x - 30

Mathematics

Use rational exponents to simplify the radical. If rational exponents appear after simplifying, write the answer in radical notation.( )12

A.
B. xy2
C. (xy)2
D. x2y

Mathematics