Three positive numbers are in arithmetic progression (a. p). the sum of the squares of the three numbers is 155. while the sum of the numbers is 21. if the common difference is positive. find the values of x and y

The required arithmetic sequence will be 5, 7, and 9 if the sum of the squares of the three numbers is 155. while the sum of the numbers is 21

Let the three positive numbers be a-d, a and a + d

If the sum of the numbers is 21, this means that a-d+a+a+d = 21

3a -d + d = 21

3a = 21

a = 21/3

a = 7

The sequence of numbers will be 7-d, 7 and 7+d

If the squares of the three numbers is 155, hence;

Hence the required arithmetic sequence will be 5, 7 and 9

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the quotient is 4x^2 - 27x + 167 with a remainder of -996

step-by-step explanation:

in synthetic division, use -6 as the divisor and use the coefficients {4, -3, 5, 6}:

-6     )   4     -3     5     6

                -24   162 -1002

          4   -27   167   -996

thus, the quotient is 4x^2 - 27x + 167 with a remainder of -996.

note:   your "4x°-3x+5x+6" is ambiguous / incomplete.   i had to assume that you meant '4x^3 - 3x^2 + 5x + 6."

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