Math 3 Section 4.6 #29 and #31

A.Cockrell

Math 3 Honors 2nd Period

The error in this problem is (-x)^2 which should be a postitive x^2.  The reason it is wrong in the equation is because you are suppose to raise (-x)^2 ,  which looks like             (-x)(-x) which equals a positive x^2.

After you label the sides of your trapezoid, you then plug it into your formula

A=1/2 h (b1+b2). When you get your answer you then use your answer and use it in the quadratic formula. So your dimensions are 5 and -6.

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