SOLUTION: find the area of the square if its side measures (4x+7) cm

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Question 1143149: find the area of the square if its side measures (4x+7) cm
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
+s+=+4x+%2B+7+
The square of the side = the area of the square
+s%5E2+=+%28+4x+%2B+7+%29%5E2+
+s%5E2+=+16x%5E2+%2B+56x+%2B+49+
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proof:
Say +x+=+1%2F4+
+s+=+4%2A%281%2F4%29+%2B+7+
+s+=+8+
+s%5E2+=+64+
and
+s%5E2+=+16%2A%281%2F4%29%5E2+%2B+56%2A%281%2F4%29+%2B+49+
+s%5E2+=+1+%2B+14+%2B+49+
+s%5E2+=+64+
OK