Question

$2x {}^{2} + - x { + 9x + 5}^{2}$
​

Answer 1

$2x2−x+9x+52=2x2+8x+25</p><p></p><p>Steps</p><p></p><p> 2x^2-x+9x+5^2 2x2−x+9x+52</p><p></p><p> \mathrm{Add\:similar\:elements:}\:-x+9x=8x Add similar elements: −x+9x=8x</p><p></p><p> =2x^2+8x+5^2 =2x2+8x+52</p><p></p><p> 5^2=25 52=25</p><p></p><p> =2x^2+8x+25 =2x2+8x+25</p><p></p><p>$