What is the factored form of the expression?

4x2 - 81y2

A. (2x + 9) (2x - 9)

B. (2x + 9y) (2x - 9y)

C. (2x + 9y) 2

D. (2x - 9y) 2

Factor the polynomial.

54c3d4 + 9c4d2

A. 9c3d2 (d2 + 6c)

B. 9c3d2 (6d2 +

c.

C. 9c4d2 (d2 + 6)

D. 9c4d2 (6d2 + 1)

In a closed system containing three different gases as shown, X2 + Y2 2XY. Choose the TWO things that MUST happen as the volume of the system is decreased at constant temperature. 1) The relative concentrations of each gas must change.

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How can an unsaturated solution of a solid be made saturated? a. increasing the temperature of the solvent b. decreasing the temperature of the solvent c. stirring the solution d. removing solute

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When you kick a soccer ball across a field it will eventually come to a stop. Does this prove or disprove Newton's first law of motion? It disproves Newton's first law of motion because gravity is stronger than friction.