แผ่นงานcompleting the square basic
คำถามทั้งหมด: 18
แป้นคำตอบcompleting the square basic
คำถามทั้งหมด: 18
x2 + 12x + 36
49
9
4
100
x = -1 and -9
k = 10 and 2
Subtract the 21
subtract 3 to move,
(b) 4/2 = 2
then 22 = 4
so add 4 to both sides, next factor the trinomial
After taking the square root of both sides
x = 1 and -13
x2 + 12 x +11
-origninal problem
,x2 + 12 x + 36 = -11 + 36
-b/2, square it, then add to both sides
,(x + 6) 2 = 25
-factor the perfect square trinomial
,=
-Square root both sides to solve
,x + 6 = ± 5
-6 -6
x =-1 or - 11
-SOLVED
(answer)
