Solve.x2 + x + 8 = 0
A. - 
± 
B. 
± 
i
C. - 
± 
i
D. 
± 
Answer: C
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Find the standard-form equation of the ellipse centered at the origin and satisfying the given conditions.An ellipse with length of major axis 16 and y-intercepts 
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Add or subtract. Simplify the answer.
+ 
+ 
A. 
B. 
C. 3b
D. 2b
Provide an appropriate response.Suppose that you are solving a system of three linear equations and three variables by the Gaussian elimination method and you obtain the augmented matrix. 
What row operation would you perform next?
A. Add -15 times row 1 to -12 times row 3 to obtain a zero in the third row, second column position.
B. Multiply row 1 by - 
.
C. Multiply row 2 by - 
.
D. Add row 1 to row 2.
Identify the property of real numbers illustrated in the statement.4 + (-4) + a = a
A. Identity property of addition B. Inverse property of multiplication C. Inverse property of addition D. Identity property of multiplication