Simplify.3 ? (5 + 4)2 - 3 ? (6 - 4)2
A. 231
B. 693
C. 960
D. 349
Answer: A
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Multiply the polynomials using a special product formula. Express the answer as a single polynomial in standard form.(2x + 1)2
A. 4x2 + 1 B. 2x2 + 1 C. 4x2 + 4x + 1 D. 2x2 + 4x + 1
Multiply, and then simplify if possible. Assume all variables represent positive real numbers.(
- 2
)(
- 2
)
A. 11x - 2
- 2
+ 4
B. 11x - 2
+ 4
C. 11x - 2
- 2
+ 4
D. 121x2 - 2
- 2
+ 4
If possible, factor the polynomial completely. If a polynomial cannot be factored, state that it is prime.x2 + 9x - 36
A. Prime B. (x + 12)(x - 3) C. (x - 12)(x + 3) D. (x - 12)(x + 1)
Solve the problem.The pH of a solution ranges from 0 to 14. An acid has a pH less than 7. Pure water is neutral and has a pH of 7. The pH of a solution is given by 
where x represents the concentration of the hydrogen ions in the solution in moles per liter. Find the hydrogen ion concentration if the 
A. 3.98 × 10-2 B. 2.51 × 10-2 C. 2.51 × 10-3 D. 3.98 × 10-3