Find the real solutions, if any, of the equation. Use the quadratic formula.x2 + x + 1 = 0
A. 
B. 
C. 
D. no real solution
Answer: D
Mathematics
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Find all values of ? in [0°, 360°) that satisfy the equation.sin ? = 
A. {60°, 120°} B. {60°, 300°} C. {150°, 210°} D. {210°, 330°}
Mathematics
Solve the system of linear equations.
x - 
y = -18
x + 
y = -9
A. (12, 0) B. (-12, 0) C. (0, 12) D. No solutions
Mathematics
Simplify the expression by combining like terms.2y + 3 + 9y - 8
A. 11y - 5 B. 11y + 11 C. 16y D. -7y + 11
Mathematics
Multiply.(x + 1)(x - 1)(5x - 5)
A. 5x3 - 5x2 - 5x + 5 B. 5x3 + 5x2 - 5x - 5 C. 5x3 - 15x2 + 15x - 5 D. 5x3 - 5x2 + 5x - 5
Mathematics