Question

If x=9 and y=3 then |1-2x|+4y^2

Answer 1

53

Explanation:

If x = 9 and y = 3, then we have to find the value of
`|1 - 2x| + 4y^(2)`.

The problem is simple and we have to put the values of x and y in the expression.

Let,
`A = |1 - 2x| + 4y^(2)`.

⇒ A =
`|1 - 2(9)| + 4(3)^(2)`

⇒ A =
`|1 - 18| + 4* (9)`

⇒ A =
`|- 17| + 36`

[Here, we must define the function |x|.

|x| = x for x ≥ 0 and |x| = - x for x < 0

Now, here x is less than zero and it is - 17.

So. |x| = - x = - ( -17) = 17 ]

⇒ A = 17 + 36

⇒ A = 53 (Answer)