Question

two billion,six hundred million in expanded notation using powers of 10

(2x 10^11) + (6x10^8)

would that be correct??
Online "*" is used to indicate multiplication, because "x" is also used to indicate an unknown.

2,600,000,000 = 2.6 * 10^9
2 billion 2 hundred million in expanded notation using powere of 10
No, it would be (2 x 10^9) + (6 x 10^8)

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