3. 1. 3x² + 13x + 12 = 0
II. y2 +9y+ 20 = 0 how to do this
Answers
Answered by
0
Step-by-step explanation:
ax^2 + bx + c = 0
1 . a = 3, b = 13 , c = 12
Clearly ,
3x² + 13x + 12 = 0
3x² +9x + 4x + 12 = 0 [as 3*12 = 9*4]
3x(x+3) + 4(x+3) = 0
(3x+4)(x+3) = 0
You can simply go for determinant method if you only want roots.
y2 +9y+ 20 = 0
y^2 +5y + 4y +20 = 0
y(y+5) + 4(y+5) = 0
(y+5)(y+4)= 0
Similar questions