Fill in the blanks to show the sum of (2x2+4x) and (x+8). (2x2+4x)+(x2+8)= Answer
x2+ Answer
x+ Answer

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Step-by-step explanation:

To find perimeter, we use this equation.
2L+2W=42
Let's say the longer side is the length.
L=W+7
Let's plug that in for L.
2(w+7)+2w=42
2w+14+2w=42
Add like terms.
4w+14=42
Subtract 14 from both sides.
4w=28
Divide.
28÷4=7=W
The shorter side is 7, which means the longer side is 14 cm.