4y
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When multiplying powers, you add them! y4 times y6 = y10. Try it with y = 2: 2 to the fourth = 16, 2 to the sixth = 64 16 x 64 = 1024 = 2 to the tenth.
The product is (xy - 3x + 4y -12).I got that by performing the multiplication of (x + 4) (y - 3) .
(4y)-2
You multiply the unit cost by the number of units. The product of y and 4 is 4y.
x + y = 5xy=41 and 4 works. ■