Add or subtract. Write the answer in lowest terms.
- 
A. 
B. 
C. 
D. 
Answer: B
Mathematics
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Factor the trinomial completely.a2(a + b)2 - ab(a + b)2 - 20b2(a + b)2
A. (a + b)2(a - 5b)(a + 4b) B. (a + b)2(a - 4b)(a + 5b) C. (a + b)2(a - 5)(a + 4) D. (a - 5b)(a + 4b)(a + b)
Mathematics
Use a calculator to approximate the root to the nearest thousandth.- 
A. -7.280 B. -53.000 C. -7.277 D. -7.285
Mathematics
Evaluate the trigonometric function of the given quadrantal angle. If the value is undefined, write "undefined."tan 1440°
A. -1 B. 0 C. undefined D. 1
Mathematics
Solve the equation. Check your solution.0.50x - 0.20(20 + x) = 0.25(20)
A. {40} B. {15} C. {30} D. {20}
Mathematics