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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:
$x^2-3x-18$
$x^2+3x-28$

$x^2+2x-35$
$x^2-15x+56$

$x^2-9x$
$x^2-11x+30$

$x^2+4x+3$
$x^2+2x-48$

$x^2-x-12$
$x^2+18x+81$

$x^2+6x+5$
$-5x^2-35x$

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

$x^2-11x+30$
$9x^2+45x$

$x^2-x-2$
$x^2-x-6$

$x^2+9x+18$
$x^2-5x+4$

$-8x^2-64x$
$-7x^2+42x$

Solving by Factorizing

Fully factorize. $\qquad x^2-3x+2=$

Solve for $x$.$\qquad x^2-3x+2=0\qquad \qquad x=$

Fully factorize. $\qquad x^2-49=$

Solve for $x$.$\qquad x^2-49=0\qquad \qquad x=$

Fully factorize. $\qquad x^2-8x+16=$

Solve for $x$.$\qquad x^2-8x+16=0\qquad \qquad x=$

Fully factorize. $\qquad x^2+8x=$

Solve for $x$.$\qquad x^2+8x=0\qquad \qquad x=$

Fully factorize. $\qquad 3x^2-3x-60=$

Solve for $x$.$\qquad 3x^2-3x-60=0\qquad \qquad x=$

Fully factorize. $\qquad -2x^2-24x-72=$

Solve for $x$.$\qquad -2x^2-24x-72=0\qquad \qquad x=$

Solve for $x$. If there are multiple answers, separate them with commas.

$x^2-3x=-2\qquad \qquad x=$

$x^2=49\qquad \qquad x=$

$x^2+16=8x\qquad \qquad x=$

$8x=-x^2\qquad \qquad x=$

$3\left(x^2-20\right)=3x\qquad \qquad x=$

$-72=2x\left(x+12\right)\qquad \qquad x=$