i) The value of x?- 2xy + y?when x=1, y=2 is ii) The sum of 7x, 10x and -13x.is iii) The coefficient of xy’z in -7x{yʻz is iv)Thearea of a rectangle whose length and breadth are 9y and 4y respective is - v) The ratio 4:25 converted to percentage is
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Answer: First we will look at the equation, the we are given with the values of x and y in the brackets as x = 1 and y =2.
The we will put the 1 in place of x and 2 in place of y and then we will equate the whole Solution. Then we will cancel the -4 and + with with other. Then 1 is going to be left, which is your answer.
Step-by-step explanation:
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