Tell how many roots the following equation has.
?
Fill in the blank(s) with the appropriate word(s).
Answer: 7
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Solve the system of linear equations. If the system has infinitely many solutions, describe the solution with an ordered triple in terms of variable z.x + 8y + 8z=87x + 7y + z=18x + 15y + 9z=-9
A. no solution B. (0, 0, 1) C. (-1, 0, 1) D. (1, -1, 1)
Find the value of the expression.(7 + 7)[7 + (5 + 6)]
A. 882 B. 1813 C. 91 D. 252
Use the fundamental identities and appropriate algebraic operations to simplify the expression.
A. -sec x B. 1 C. sec x D. csc x
Find all complex roots. Write the answer in polar form, with 0 ? ? ? 360°.Fifth roots of 1
A. cos 180° + i sin 180°, cos 36° + i sin 36°, cos 108° + i sin 108°, cos 252° + i sin 252°, cos 324° + i sin 324° B. cos 0° + i sin 0°, cos 72° + i sin 72°, cos 144° + i sin 144°, cos 216° + i sin 216°, cos 288° + i sin 288° C. cos 180° + i sin 180°, cos 72° + i sin 72°, cos 144° + i sin 144°, cos 216° + i sin 216°, cos 288° + i sin 288° D. cos 0° + i sin 0°, cos 36° + i sin 36°, cos 108° + i sin 108°, cos 252° + i sin 252°, cos 324° + i sin 324°