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Other Ways to Solve
1.1 300000 = 25•3•55
(300000)2 = (25•3•55)2 = 210 • 32 • 510
(210•32•510) + 21000000
3.1 Pull out like factors : 210 • 32 • 510 + 21000000 = 300000 • (1 + 70)
300000 • (1 + 70)
How did we do?