Question

If square of 17 is subtracted from a square of number x , the result obtained is 111. Find the number x.

Answer 1

Answer:

x = ± 20

Step-by-step explanation:

x² - 17² = 111

x² = 111 + 17²

x² = 111 + 289

x² = 400

x = ± 20

Answer 2

Step-by-step explanation:

${x}^{2} - {17}^{2} = 111$

${x }^{2} = 111 + 289$

${x}^{2} = 400$

$x = 20$