Now halve a and double b. In other words plug in a/2 instead of a and 2b instead of b. ?? ×c = 2(2b)³/(a/2)
Then get all the new multipliers/dividers at the beginning of the right side. Note that we divide by (a/2), which is the same as multiplying by (2/a), so 2 goes to the numerator. I've highlighted the new multipliers by the same colors to make transformations easier to spot. ?? ×c = ( 2(8b³)/a ) × 2 ?? ×c = (8 × 2) × ( 2b³/a )
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