For what values of x does - x2 + 7x + 5 = 0

Step-by-step explanation:

To find the value of x in - x^2+7x+5=0

Multiply through by - 1

x^2-7x-5=0

Usinng formulate method

We get

-b+or-√b^2-4ac over 2a

7 + or - √-7^2-4*1*-5 over 2*1

7 + or - √49+20/2

7+or - √69/2

7+8.3/2 or 7-8.3/2

7.7 or - 0.65