3. Which of the following polynomial is written in standard form?
A. a3-5a4 + 7 a2 + 3as 4
C. 5x3 - 4x2 + 3x7 + 2x+ - 1
B. 3a* - a3 + 7a2 + 6a + 2
D. 12y3 – 10y3 + 8y3 + 6y3

4. How many terms does the following sum have when (4x' -- 3x2 + 10x - 4) + ( 4x' + x3 + 2x)
is written in standard form?
A. 3
B. 1
C. 5
D. 7

5. which value of ( a ) makes (9x - 1)² = ax² - 18x + 1 true ?
A. 9
B. 18
C. 64
D. 81
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