Question

solve X square + 6 x minus 7 is equals to zero by the method of completing the square​

Answer 1

Answer:

1 or -3

Step-by-step explanation:

$x^{2} +6x-7=0;\\x^{2} +7x-x-7=0;\\x(x+7)-1(x+7)=0;\\(x+7)(x-1)=0;$

∴Either,

$x+7=0;$            or         $x-1=0;$

$x=-3;$                            $x=1;$

so x=1 or -3