Factor the binomial completely. If it is prime, say so.98a4 - 72b2
A. 2(7a2 - 6b)2
B. 2(7a2 + 6b)2
C. 2(7a2 + 6b)(7a2 - 6b)
D. Prime
Answer: C
Mathematics
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Solve the equation using the quadratic formula. Simplify irrational solutions, if possible.x2 + 7x + 3 = 0
A. 
B. 
C. 
D. 
Mathematics
Solve by the substitution method.8x + 9y = -11-2x + 7y = -25
A. (-11, -25) B. (1, -2) C. (2, -2) D. (2, -3)
Mathematics
Provide an appropriate response.If a ? 0, 
is called the reciprocal of a. Use this definition to express the reciprocal of 
in the form 
Fill in the blank(s) with the appropriate word(s).
Mathematics
Find the product. Write the product in rectangular form, using exact values.[4(cos 210° + i sin 210°)] [5(cos 120° + i sin 120°)]
A. -10 - 10
i
B. -10
+ 10i
C. 10 + 10
i
D. 10
- 10i
Mathematics