Answer:
2x²+5x+15
Explanation:
Make the diagram to two rectangular.
The large one area: (x+3) . (x+5)=x²+8x+15
The small one area: [(2x+2)-(x+5)]. x=(2x+2-x-5).x=(x-3).x=x²-3x
Add two rectangular together: x²+8x+15+x²-3x=2x²+5x+15
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