Tentukanlah akar-akar persamaan berikut :

Penjelasan dengan langkah-langkah:

a. x² + 10x + 24 = 0

( x + 6 ) ( x + 4 ) = 0

x1 = -6. // x2 = -4

b. x² + x – 12 = 0

( x – 3 ) ( x + 4 ) = 0

x1 = 3. // x2 = -4

c. x² – 3x – 1O = 0

( x – 5 ) ( x + 2 ) = 0

x1 = 5. // x2 = -2

d. 24 + 5x – x2 = 0

( 8 – x ) ( 3 + x ) = 0

x1 = 8. //. x2 = – 3

e.28 – 3x – x2 = 0

( 7 + x ) ( 4 – x ) = 0

x1 = -7 //. x2 = 4