Question

please answer this question .....i will mark you as Brainlist please

Answer 1

Hey

Here is your answer,

Let the number of swans = x2

Then, number of swans playing at the bank shore = (7/2)√x2 = 7x/2

Again given, 2 swans are playing in the water.

So, total number of swans = number of swans playing at the bank shore + number of swans playing in the water

=> x2 = 7x/2 + 2

=> x2 = (7x + 4)/2

=> 2x2 = 7x + 4

=> 2x2 - 7x - 4 = 0

=> (x - 4)*(2x + 1) = 0

=> x = 4, -1/2

Since x = -1/2 is not possible,

So, x = 4

Hense, the number of swans = x2 = 42 = 16

Hope it helps you!

Answer 2

☆hey friend !!!!☆

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here is your answer ☞
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$lets \: total \: number \: of \: swans \: = \: x \\ \\ now \: according \: to \: your \: question \: \\ \\ = > \: \frac{7}{2} \times \sqrt{x} \: + 2 \: = x \\ \\ = > \: \frac{7}{2} \sqrt{x} = x - 2 \\ \\ squaring \: both \: side \\ \\ = > \: \frac{49}{4} x \: = {x}^{2} + 4 - 4x \\ \\ = > \: 49x \: = \: 4 {x}^{2} + 16 - 16x \\ \\ = > \: 4 {x}^{2} - 49x - 16x + 16 = 0\\ \\ = > 4 {x }^{2} - 65x + 16 = 0 \\ \\ = > \: 4 {x}^{2} - 64x - x + 16 = 0 \\ \\ = > \: 4x(x - 16) - 1(x - 16) = 0 \\ \\ = > (4x - 1)(x - 16) = 0 \\ \\ now \\ \\ = > \: x = \frac{1}{4} \: (not \: a \: possible \: value) \\ \\ and \\ \\ = > \: x = 16 \: \: \: \: ..............answer$

hence, number of the swans is "16"

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hope it will help you ☺☺
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Devil_king ▄︻̷̿┻̿═━一