Answer:
(2x-1)(2x+1)
Step-by-step explanation:
the answer is c
a). (20 x 80) + (20 x 6) + (7 x 80) + (7 x 6)
Answer:
8x−3
Step-by-step explanation:
HOPE THIS HELPS!!!! :)
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Let L = length & W= width
Just rewrite the problem in math:
L=5+2W & Area = L x W=403cm²===> (5+2W).(W)=403.
==>2W²+5W-403 =0 Solve the quadratic equation. & you will get W=13
Plug it to find L =31
x equals zero
-7=9x-7
Add the -7 over: 0=9x
Divide both sides by 9: 0=x
