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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:
$x^2+16x+64$
$x^2+5x+4$

$x^2-4x-5$
$x^2+9x+8$

$x^2-1$
$-x^2+x$

$2x^2-2x$
$x^2-x-56$

$x^2-5x-6$
$x^2+7x+12$

$x^2+5x-14$
$x^2-49$

$x^2+8x$
$x^2-4$

$x^2-36$
$-7x^2-35x$

$x^2-6x-7$
$x^2+x-56$

$x^2+8x-9$
$x^2+3x$

$2x^2-4x$
$x^2+x-6$
Solve for $x$. If there are multiple answers, separate them with commas.
$-2x^2-20x-18=0 \qquad x=$
$-9x^2+27x+90=0 \qquad x=$

$x^2-49=0 \qquad x=$
$5x^2-5x=0 \qquad x=$

$x^2-17x+72=0 \qquad x=$
$8x^2-56x+96=0 \qquad x=$

$x^2+11x+28=0 \qquad x=$
$x^2-x-2=0 \qquad x=$

$4x^2-28x-72=0 \qquad x=$
$x^2+7x=0\qquad x=$

$x^2+2x-15=0 \qquad x=$
$-3x^2-6x+9=0 \qquad x=$

$-3x^2+27x-54=0 \qquad x=$
$6x^2+42x+36=0 \qquad x=$

$-3x^2+147=0 \qquad x=$
$4x^2+4x-80=0 \qquad x=$

$2x^2-32=0 \qquad x=$