Question

44. When a number is substracted from its square, the result is 20.what is the number number? a) 10 b) 20 c) 5 d) 25​

Answer 1

Answer:

bye take care khuch nhi kareeg ham bezze he

Step-by-step explanation:

Answer 2

Answer:

Let the number be x

so,

${x}^{2} - x = 20$

${x}^{2} - x - 20 = 0$

${x}^{2} - (5 - 4)x - 20 = 0$

${x}^{2} - 5x + 4x - 20 = 0$

$x(x - 5) + 4(x - 5) = 0$

$(x - 5)(x + 4) = 0$

here, either (x-5) is 0 or (x+4) is 0

so,

$x - 5 = 0$

$x = 5$

or

$x + 4 = 0$

$x = - 4$

correct option is (c)5

hope it helps