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(1K) Factorising $x^2+bx+c$

Expand $2\left(x+3\right)\left(x-2\right)=2\bigl($ $\bigl)=$
Factorize $2x^2+2x-12=2\bigl($ $\bigl)=2\bigl($ $\bigl)\bigl($ $\bigl)$

Expand $5\left(x-4\right)\left(x-1\right)=$
Factorize $5x^2-25x+20=$ $\bigl($ $\bigl)\bigl($ $\bigl)$

Expand $-\left(x-5\right)\left(x+9\right)=-\bigl($ $\bigl)=$
Factorize $-x^2-4x+45=$ $\bigl($ $\bigl)\bigl($ $\bigl)$

Expand $-3\left(x-2\right)\left(x-5\right)=$
Factorize $-3x^2+21x-30=$ $\bigl($ $\bigl)\bigl($ $\bigl)$
Fully factorize:
$6x^2+24x+18$
$8x^2+56x-64$

$6x^2-24x-30$
$9x^2-63x+54$
Fully factorize:
$-2x^2-20x-42$
$-x^2-4x+45$

$-8x^2+24x+80$
$-3x^2+21x-30$