Q. Which of the following expressions is equivalent to 63640f2g9 ?Choose 1 answer:(A) 60fg438g(B) 60g334f2(C) 48fg4310g(D) 24g3310f2
Simplify Expression: First, let's simplify the expression inside the cube root. 640 can be factored into prime factors: 640=27×5. The expression becomes 327×5×f2×g9.
Split into Separate Roots: We can split the cube root into separate roots for each factor: 6×327×35×3f2×3g9.
Simplify Each Cube Root: Now, we simplify each cube root separately. For 327, we can take out 22 (which is 4) from the cube root because 26 is a perfect cube. This leaves us with 6×4×32×35×3f2×3g9.
Multiply Constants: For 3g9, g9 is a perfect cube (since 9 is divisible by 3), so we can take g3 out of the cube root. This gives us 6×4×g3×32×35×3f2.
Combine Numbers Inside Root: For 3f2, we cannot simplify further since 2 is not divisible by 3. So, it remains inside the cube root.
Compare with Answer Choices: Now, we multiply the constants outside the cube root: 6×4×g3=24g3. The expression now is 24g3×32×5×f2.
Compare with Answer Choices: Now, we multiply the constants outside the cube root: 6×4×g3=24g3. The expression now is 24g3×32×5×f2. We can combine the numbers inside the cube root: 32×5=310. The expression simplifies to 24g3×310×f2.
Compare with Answer Choices: Now, we multiply the constants outside the cube root: 6×4×g3=24g3. The expression now is 24g3×32×5×f2. We can combine the numbers inside the cube root: 32×5=310. The expression simplifies to 24g3×310×f2. We compare the simplified expression with the answer choices. The expression 24g3×310×f2 matches with choice (D).
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