Step-by-step explanation:
the question answer a should be
Answer:
Step-by-step explanation:
1) a² - b² = (a + b)(a- b)
2) a³ + b³ = a³ + 3a²b + 3ab² + b³
3) a³ - b³ = a³ - 3a²b + 3ab² - b³
5) x⁴ - 36 = (x²)² - 6² = (x² + 6) (x² - 6)
6)64c³ + 1 = (4c)³ + 1³ = (4c)³ + 3(4c)²(1) + 3(4c)(1)³ + 1³
= 64c³ + 3(16c²) + 12c +1
= 64c³ + 48c² +12c + 1
7) k³ - 27 = k³- 3³ = (k + 3)(k - 3)
Answer:
1. 15, 13
2. 12, 6
3. 130,135
4. 44, 41
5. 42, 52
Step-by-step explanation:
1. the answer is 15,13 because the sequence goes with minus 2
2. the answer is 12,6 because the sequence goes with divided by 2
3. the answer is 130,135 because the sequence goes with plus 5
4. the answer is 44, 41 because the sequence goes with minus 3
5. the answer is 42,52 because the sequence goes with plus 10
Answer:
69
Step-by-step explanation:
69
A = (B + b)xH : 2
A = (4.5+7.5) x 5 : 2
A = 12 x 5 : 2
A = 60 : 2
A = 30 in²
