Question

√2x+9 =13 -x find x . √ ,2 से 9 तक हैं।

Answer 1

$\sqrt{2x + 9} = 13 - x \\ squaring \\ 2x + 9 = {(13 - x)}^{2} = 169 - 26x + {x}^{2} \\ {x}^{2} - 28x + 160 = 0 \\ (x - 20)(x - 8) = 0 \\ x = 20 \: \: or \: \: 8$