Q. Given x>0 and y>0, select the expression that is equivalent to−36x11y86ix112y41−6x112y416ix211y4−6x211y4
Recognize Imaginary Unit: First, we need to recognize that the square root of a negative number involves the imaginary unit i, where i2=−1. So, we can rewrite the square root of −36 as 6i.
Find Square Root of x11: Next, we need to find the square root of x11. Since the exponent is odd, we cannot directly take the square root. However, we can express x11 as x10×x, and then take the square root of x10 which is an even exponent.
Find Square Root of y8: The square root of x10 is x10/2=x5. We still have the x that was not under the square root, so we need to multiply x5 by the square root of x, which gives us x5+1/2=x11/2.
Combine Parts: Now, we need to find the square root of y8. Since the exponent is even, we can directly take the square root. The square root of y8 is y8/2=y4.
Compare with Options: Combining all the parts together, we have 6i×x(11/2)×y4. This gives us the expression 6ix(211)y4.
Compare with Options: Combining all the parts together, we have 6i times x(11/2) times y4. This gives us the expression 6ix(211)y4.We can now compare the expression we found with the options given in the problem. The correct expression that matches our result is 6ix(211)y4.
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