Find all values that make the rational expression undefined. If the rational expression is defined for all real numbers, so state.

A. x = -9, x = -7
B. x = 9, x = 7
C. x = 0
D. x = 9, x = -9


Answer: B

Mathematics

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Write a differential formula that estimates the given change in volume or surface area.The change in the surface area S = 4?r2 of a sphere when the radius changes from r0 to r0 + dx

A. dS = 2?r0 dr B. dS = 8?r0 dr C. dS = 4?r0 dr D. dS = 4?r02 dr

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Use the square root property to solve the quadratic equation.x2 = 

A. ± 7
B. ± 
C. ± 
D.

Mathematics

Write the expression as sums or differences of multiples of logarithms.logy

A. logy5x B. logy7 +logyx + logy2 C. logy7x -logy2 D. logy7 +logyx - logy2

Mathematics

Provide an appropriate response.Give the first step in solving the given equation for x.y + z = 

What will be an ideal response?

Mathematics