2bc - 2ca a2 + b2 + c2 - 2ab

i.

ii.

iii.

i ii i iii

ii iii i, ii iii

a + b - c a² + b² + c²

a² + b² - c² + 2ab - 2bc - 2ca a² + b² + c² - 2ab - 2bc - 2ca a² + b² + c² + 2ab - 2bc - 2ca (x + 6)(x + 4)

x² - 62 x² - 4² (x)² - (10)² (x + 5)² - (1)² 3a² – 16a – 12

(3a-2)(a-6) (3a+2)(a+6) (3a+2)(a-6) (3a-2)(a+6) 16x² + 25y²

20xy 25xy 30xy 40xy

* *

x+y = 2 x³+y³+6xy

- 8 0 8 10

a + b = 5 ab = 6 i. a² + b² = 13 ii. a² - b² = 5 iii. a - b = 2

i ii i iii

ii iii i, ii iii

x + y = 3 x – y = 2 x² - y²

5 6 1 6

2(x² + y²) 1

2 1 5

2 5

x²y² 1 4

5 4

1 16

25 16 7

4 7 7 7 8 7 10 7

a³ + b³ = 27, a + b = 3 ab =

0 1 2 3

x + 1

x = 3 x³ + 1 x³

0 5 3 5 9

5a³b,10a²b,20a⁴b²

5a²b 20a⁴b² 5a⁴b² 20a²b

i) ii) iii)

i ii i iii

ii iii i, ii iii

𝑥 − 3𝑥 = 1 

𝑥 +

𝑥 – 36𝑥 − 1 = 0 𝑥 = 119 − i)

ii)

i)

ii)