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• Quadratic Equations, Inequalities, and Functions
• Solving Quadratic Equations
• Solving quadratic equations using the quadratic formula

# Solving quadratic equations using the quadratic formula

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•  Question 1: 1 pts For $2x^2-3x-1=0$ if $a=2$, $b=-3$ then $c = ?$
 $1$ $-1$ $3$ $2$
•  Question 2: 1 pts For $x^2-9=0$ if $c=-9$, than $b= ?$
 $1$ $-1$ $0$ $9$
•  Question 3: 1 pts For $2x^2-9=x$ if $a=2$, $c =-9$ than $b=?$
 $1$ $-1$ $2$ $-2$
•  Question 4: 1 pts easy : For $-\frac{1}{2}x^2+x=-4$ if $a=-\frac12 , b = 1$ than $c= ?$
 $2$ $-2$ $4$ $-4$
•  Question 5: 2 pts For quadratic equation $-x^2=10$ choose the correct substitution for a, b and c in the standard form $ax^2+bx+c=0$.
 $a=-1 , b=0 , c=10$ $a=1 , b=0 , c=-10$ $a=-1 , b=0 , c=-10$
•  Question 6: 2 pts Solve $a^2+4a-5=0$ by using the quadratic formula.
 $a = 1 , a = -5$ $a = 1 , a = 5$ $a = -1 , a = 4$ $a = 1 , a = 4$
•  Question 7: 2 pts Solve $2m^2-m=1$ by using the quadratic formula.
 $m=2 , m=-1/2$ $m=-1 , m=-2$ $m=1 , m=-1/2$
•  Question 8: 3 pts Solve $p(p+1)-2(p-1)=2$ by using the quadratic formula.
 $p=0 , p=-1$ $p=1+i , p=1-i$ $p=i , p=-i$ $p=0 , p=1$
•  Question 9: 3 pts Solve $1/2m^2+m+1=0$ by using the quadratic formula.
 $m=1 , m=-1$ $m=i , m=-i$ $m=1+i , m=1-i$ $m=2+i , m=2-i$
•  Question 10: 3 pts Solve $3x^2-\sqrt{12}x+1=0$ by using the quadratic formula.
 $\sqrt{3}$ $\frac{\sqrt{3}}{3}$ $2\sqrt{3}$ $\frac{\sqrt{3}}{2}$