Answer:
b = 2
c = -1
d = -2
Step-by-step explanation:
b = 2*1 = 2
c = -3 +b = -3+2 = -1
d = c*2 = -1 * 2 = -2
You can use the 3 4 5 triangle to compare their ratios like 40/3: 42/4:58:5
and yes it is.
Are you trying to say 8x or 8 times 3?
The easiest ways is to use the quadratic formula that is:
x' = [-b+√(b² - 4ac)]/2a and x" = [-b -√(b² - 4ac)]/2a
Solving : 2x² + 5x - 11 = 0, gives:
x' = [-5+√(25 - 4(2)(-11)]/4 and x" = [-5-√(25 - 4(2)(-11)]/4
x' = (-5+√113)/4 & x" = (-5-√113)/4