Solving Quadratic Equations (OCR GCSE Maths: Foundation): Exam Questions

Solve  $x^2+10x+16=0$

Solve  $x^2-16x+64=0$

Solve  $x^2-36=0$

Solve $x^2-x-12=0$

Solve by factorising.

$x^2+9x+20=0$

$x$= ....................... or $x$ = .......................

Solve  $x^2-5x-24=0$

Solve  $x^2+4x-45=0$

Solve  $0=x^2-81$

The only solution to $x^2+bx+c=0$    is    $x=5$

Work out the values of $b$ and $c$.

$\begin{array}{l}b=....................\\ c=.....................\end{array}$

Solve  $x^2–21x+20=0$

Show your working clearly.

Factorise  $x^2+2x–24$.

Hence solve  $x^2+2x–24=0$

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