Multiply the polynomials using the special product formulas. Express the answer as a single polynomial in standard form.(8x + 5)2
A. 8x2 + 25
B. 8x2 + 80x + 25
C. 64x2 + 80x + 25
D. 64x2 + 25
Answer: C
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Use Gaussian elimination to find the complete solution to the system of equations, or state that none exists.x + 8y + 8z=87x + 7y + z=18x + 15y + 9z=-9
A. {(1, -1, 1)} B. ? C. {(0, 0, 1)} D. {(-1, 0, 1)}
Simplify the expression. Express the answer so that only positive exponents occur. Assume that all variables are positive.
A. 3x29/20 B. 3x19/20 C. 9x19/20 D. 9x29/20
Find the length of the third side of the right triangle. Assume that c represents the length of the hypotenuse. Give an exact answer and, if appropriate, an approximation to three decimal places.b = 12, c = 15
A. a = 10 B. a = 81 C. a = 9 D. a = 3
Use a calculator to find the approximate value of the expression rounded to two decimal places.cos 
A. 0.75 B. 1.13 C. 1.00 D. 0.62