Answer:
1.) 20
2.) 1 1/5
3.) 21
Step-by-step explanation:
1.) (a⁴ - 3a²) + (a+6)²
(-2⁴-3(-2)²) + (-2+6)²
(16 - 3(4)) + (4)²
(16-12) + 16
4+16
=20
2.) a²-a/a+2
3²-3/3+2
9-3/5
6/5
1 1/5 or 1.20 or 1.2
3.) 4(a+b)² + 4a - 3b
4(2-3)² + 4(2) - 3(-3)
4(-1)² + 4(2) - 3(-3)
4(1) + 4(2) - 3(-3)
4 + 8 + 9
= 21
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Answers & Comments
Answer:
1.) 20
2.) 1 1/5
3.) 21
Step-by-step explanation:
1.) (a⁴ - 3a²) + (a+6)²
(-2⁴-3(-2)²) + (-2+6)²
(16 - 3(4)) + (4)²
(16-12) + 16
4+16
=20
2.) a²-a/a+2
3²-3/3+2
9-3/5
6/5
1 1/5 or 1.20 or 1.2
3.) 4(a+b)² + 4a - 3b
4(2-3)² + 4(2) - 3(-3)
4(-1)² + 4(2) - 3(-3)
4(1) + 4(2) - 3(-3)
4 + 8 + 9
= 21