Question

Suppose that four times the square of a number equals 20times that number . What is the namber?

Answer 1

Answer:

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Answer 2

Step-by-step explanation:

let the number be x

according to question

4 times. square of x is is. equals to the 20 times of that number

therefore

$4 {x}^{2} = 20x \\ {x}^{2} = 5x \: \: \: \\ therefore \: x and \: x \: will \: get \: cancel \: and \: one \: x \: will \: remain \: like \: this \: \: \: \\ x = 5 \: \\ therefore \: the number \: required \: is \: 5$