Question

evaluate if, x+2y=26
5y=35
x(2)(square)+2y(2)(square)
=​

Answer 1

Step-by-step explanation:

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Answer 2

Given: x+2y=26  and 5y=35

To find: x^2 + 2y^2

Solution:

• So we have given the two equations where one equation is in one variable and the second equation is in two variables.

• So from the equation which has one variable, we can find the value of that variable.

• So the equation is:

                 5y = 35

• by solving this we get:

                y = 7

• Now, we have got the value of 5, so by putting this in equation (i), we get

               x + 2y = 26

               x + 2(7) = 26

             x = 26 - 14

             x = 12

• Now putting these both values in x^2 + 2y^2, we get

             12² + 2(7)²

             =144 + 2(49)

              = 144 + 98

             = 242

Answer:

             The value of x^2 + 2y^2 is 242.