Factorise $6x^2-2.1x-1.8$ in the form $0.3(ax+b)(cx+d)$, where $a$ and $c$ are positive inte

Question

Factorise $6x^2-2.1x-1.8$ in the form $0.3(ax+b)(cx+d)$, where $a$ and $c$ are positive integers and the four integers have no common factor.

Accepted Answer

$0.3(4x-3)(5x+2)$.

Decimal quadratic factorisation