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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.
    $\sqrt{3}$
    $\frac{\sqrt{3}}{3}$
    $2\sqrt{3}$
    $\frac{\sqrt{3}}{2}$

Solving quadratic equations

Graphing function and discriminant