3. Joe solved the equation and justified each step as shown. Identify Joe’s error and fix his mistake.

Step Justification

3 + x/2 = 100 Given equation

x/2 = 7 Multiplication Property of Equality

x = 14 Subtraction Property of Equality

if this is really you s much. i only have 3 points left and i have 2 questions to ask

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step-by-step explanation:

solution:

the given function is ,

      =

the three roots of this quadratic function is , 0 ,8 and 10.all the roots are real and rational.

if a quadratic equation is of the form ,

sum of the roots = a + b +c= 0+8+10=18=  

product of roots taken two at a time = a b + b c+ c a = 0+80+0=80 =  

product of roots = a b c = 0=  

there are 11 doors in a hall starting from 0 to 11.the entry in the hall is permitted through gate number 0 and exit is allowed through only gate number 8 and 10.so, three roots(0,8,10) of quadratic function is given by entry and exit route of this hall.