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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:
$2x^2+18x+40$
$3x^2+9x-54$

$2x^2-32$
$7x^2-28x+21$
Fully factorize:
$-2x^2-12x-16$
$-6x^2-30x+36$

$-7x^2+14x+21$
$-3x^2+21x-36$