y + ( -3y²) + 2 ( y²-6y)
Answers
Answered by
0
Step-by-step explanation:
y
2
+6y−27=0
⇒y
2
+9y−3y−27=0
⇒y(y+9)−3(y+3)=0
⇒(y+9)(y−3)=0
∴y=−9,3
Similar questions