3 x 2 + 3 x + 10 x + 10 = 3 x ( x + 1 ) + 10 ( x + 1 ) = ( x + 1 ) ( 3 x + 10 ) d im e n s i o n s o f t h e rec t an g l e : ( x + 1 ) × ( 3 x + 10 )
On the test its a I failed because I put b ;
The area of the rectangle is represented by the expression 3 x 2 + 13 x − 10 , which factors to give dimensions of 3 x − 2 and x + 5 . Therefore, the rectangle's dimensions are 3 x − 2 and x + 5 .
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