Verified Answer :

Dontthankmebrainme

hey there,

y = 90 + -45x + -10x2 + 5x3

-6x + -3x = -9x
y = 5(18 + -9x + 1x2 + -3x2 + x3)
 (-2 + x) (3 + x)
y = 5(-2(3 + x) + x(3 + x))(-3 + x)
y = 5((3 -2 + x -2) + x(3 + x))(-3 + x)
y = 5((-6 + -2x) + x(3 + x))(-3 + x)
y = 5(-6 + -2x + (3 x + x * x))(-3 + x)
y = 5(-6 + -2x + (3x + x2))(-3 + x)

y = 90 + -45x + -10x2 + 5x3=
                           10        15

115+-45=70

X=70

6x+ (1/2x)(y)=3

Step 1: Factor out variable x.
x (y+12/2)=3

Step 2: Divide both sides by (y+12/2.

x(y+12/2)         3
------------- = ---------
   y+12          y+12
-----------      ----------
      2                2

Then your answer would be            6
                                              x=  ---------
                                                      y+12

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