" 7.Solve the quadratic equation "x^(2)+x+(1)/(sqrt(2))=0

(b)Solve the quadratic equation x^2+x+1=0

Solve the quadratic Equation -x^2+x-2=0

Solve the quadratic equation x^(2)+x-(a+2)(a+1)=0

Solve the quadratic equation x^2 - 5x + 10 = 0

Solve the equation by using the general expression for roots of a quadratic equation: x^(2)+x+(1)/(sqrt(2))=0

Solve the following quadratic: x^(2)+x+(1)/(sqrt(2))=0

Solve the quadratic equation. 8x ^2−22x−21=0

Solve the following quadratic equations (1)x^(2)-(sqrt(2)+1)x+sqrt(2)=0

Solve the following quadratic equations : x^(2)-(1+sqrt2)x+sqrt2=0