Question

2x square + 7x - 4 solve by completing the square​

Answer 1

$\huge\tt\colorbox{white}{AnsweR}$

$\sf\:2x^{2}+7x-4$

$\sf⟹\:2x^{2}+(8-1)x-4$

$\sf⟹\:2x^{2}+8x-x-4$

$\sf⟹\:2x(x+4)-1(x+4)$

$\tt\pink{⟹\:(2x-1)(x+4)}$

$\sf\:Either\:2x-1=0$

$\sf➪\:2x=1$

$\sf➪\:x=\frac{1}{2}$

$\sf\:oR\:x+4=0$

$\sf\:➪\:x= (-4)$

• Thnku ❣