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Factorizing $ax^2+bx+c$

Factorizing $ax^2+bx+c$

Expand $\left(\color{#0275d8}{2x}+\color{#d9534f}{3}\right)\left(\color{#d9534f}{x}+\color{#0275d8}{1}\right)=$ $x^2+$ $\color{#0275d8}{x}+$ $\color{#d9534f}{x}+$

$=$ $x^2+$ $x+$

So, to factorize $2x^2+5x+3$
$\color{#0275d8}{x}$
$\color{#d9534f}{1x}$
where if you cross multiply and add, you get the middle term $5x$

Therefore, $2x^2+5x+3=\left(2x+3\right)\left(x+1\right)$

Practice
Factorize $3x^2+16x+5$
$x$
$x$
Therefore, $3x^2+16x+5=$

Factorize $6x^2+13x+6$
$3$
Therefore, $6x^2+13x+6=$

Factorize $8x^2+2x-15$
$3$
Therefore, $8x^2+2x-15=$

Factorize $-4x^2+19x-12$
$x$
Therefore, $-4x^2+19x-12=$

Factorize:
$3x^2+7x+4$
$2x^2+7x+6$

$2x^2+5x+3$
$3x^2-8x+4$

$3x^2-x-4$
$3x^2-5x+2$

$2x^2-9x-35$
$3x^2+32x+45$

$3x^2-32x+45$
$7x^2-31x+12$

$8x^2+31x-4$
$4x^2-11x+6$

$20x^2-19x+3$
$10x^2-3x-4$

$25x^2+75x+56$
$9x^2-3x-56$