Answer:
-y = 0.66 ± [tex]\sqrt{0.33}[/tex]
Step-by-step explanation:
Since the x-term coefficient is -9, we divide everything else by 9.
-y^2 + 1.33 - 0.33 = 0
Move the 0.33 to the right hand side of the equation.
-y^2 + 1.33 = -0.33
Take the 1.33, divide it by two, square it, and add it to both sides of the equation.
y^2 + 1.33 + 0.44 = -0.33 + 0.44
Complete the right side of the equation.
-y^2 + 1.33 + 0.44 = 0.11
Take 0.44, and subtract it by 0.11. In other words, move 0.44 to the right hand side of the equation.
-y^2 + 1.33 = 0.33
Take the square roots of both sides and solve.
[tex]\sqrt{(-y+0.66)^2[/tex]= [tex]\sqrt{0.33}[/tex]
-y + 0.66 = [tex]\sqrt{0.33}[/tex]
-y = 0.66 ± [tex]\sqrt{0.33}[/tex]
Really, really hope this helps!!
