Answer the following questions. 1. Subtract 2ab from -2ab.
2. Find the sum of the two polynomials: (2x²+3x²-5)+(3x²+7)
3. Find the sum of the two polynomials: (5x²-3)+(8x²-1)
4. Find the difference: (2r²+6r+7)-(3r²+5r+8)
5. Solve: -7x(11x+12)
6. Multiply: -2x³(-2x⁷-7x²)
7. What is the product of -4a²x⁵(-2a⁸x⁶-9x⁴+2a)?
8. Divide:
9. Divide:
10. Divide:

17. a researcher measures three variables, x, y, and z for each individual in a sample of n = 20. the pearson correlations for this sample are rxy = 0.6, rxz = 0.4, and ryz = 0.7. a. find the partial correlation between x and y, holding z constant. b. find the partial correlation between x and z, holding y constant. (hint: simply switch the labels for the variables y and z to correspond with the labels in the equation.) gravetter, frederick j. statistics for the behavioral sciences (p. 526). cengage learning. kindle edition.

Divide. write in simplest form 41/6 divided by 10

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