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Quadratic Equations $x^2+bx+c=0$

Review of Factorizing

Expand $x\left(x-4\right)=$
$\quad$ Factorize $x^2-4x=$ $\bigl(x-$ $\bigl)$
Expand $3x\left(x+7\right)=$
$\quad$ Factorize $3x^2+21x=$ $\bigl(x+$ $\bigl)$
Expand $\left(x+1\right)\left(x+2\right)=x^2+$ $x+$
$\quad$ Factorize $x^2+3x+2=\bigl(x+$ $\bigl)\bigl(x+$ $\bigl)$
Expand $\left(x-5\right)\left(x+3\right)=x^2-$ $x-$
$\quad$ Factorize $x^2-2x-15=\bigl(x-$ $\bigl)\bigl(x+$ $\bigl)$
Expand $\left(x-4\right)\left(x-8\right)=x^2-$ $x+$
$\quad$ Factorize $x^2-12x+32=\bigl(x-$ $\bigl)\bigl(x-$ $\bigl)$
Expand $\left(x-3\right)\left(x+3\right)=x^2-$
$\quad$ Factorize $x^2-9=\bigl(x+$ $\bigl)\bigl(x-$ $\bigl)$
Expand $\left(x-6\right)^2=x^2-$ $x+$
$\quad$ Factorize $x^2-12x+36=\bigl(x-$ $\bigl)$
Expand $6\left(x+4\right)\left(x-1\right)=$
$\quad$ Factorize $6x^2+18x-24=$ $\bigl(x+$ $\bigl)\bigl(x-$ $\bigl)$
Expand $5\left(x-5\right)\left(x+5\right)=$
$\quad$ Factorize $5x^2-125=$ $\bigl(x-$ $\bigl)\bigl(x+$ $\bigl)$
Expand $3\left(x-4\right)^2=$
$\quad$ Factorize $3x^2-48=$ $\bigl(x+$ $\bigl)\bigl(x-$ $\bigl)$
Fully factorize:
$x^2-4$
$x^2+3x-40$

$x^2+4x+3$
$x^2-64$

$x^2+7x-8$
$x^2+12x+35$

$x^2+11x+24$
$x^2-81$

$9x^2+63x$
$x^2+13x+36$

$7x^2+28x$
$x^2-16$

$x^2-5x-24$
$x^2+4x-12$

$x^2-7x$
$x^2-x-20$

$x^2-x-30$
$x^2-x-12$

$-6x^2+48x$
$x^2+3x-54$

$x^2-4x$
$-7x^2+14x$
Solve for $x$. If there are multiple answers, separate them with commas.
$x^2-4x=0 \qquad x=$
$x^2-6x=0\qquad x=$

$x^2-5x+4=0 \qquad x=$
$5x^2+15x+10=0 \qquad x=$

$-7x^2+63=0 \qquad x=$
$-3x^2-21x-36=0 \qquad x=$

$-5x^2-30x+35=0 \qquad x=$
$4x^2-44x+96=0 \qquad x=$

$5x^2+20x-25=0 \qquad x=$
$x^2-x-42=0 \qquad x=$

$x^2+12x+32=0 \qquad x=$
$x^2-36=0 \qquad x=$

$-9x^2-18x+27=0 \qquad x=$
$x^2+x-12=0 \qquad x=$

$8x^2-72=0 \qquad x=$
$-x^2+12x-32=0 \qquad x=$

$3x^2-9x-54=0 \qquad x=$