Factorise:
$2-50 x^{2}$
$=2\left(1-25 x^{2}\right)$
$=2\left[1^{2}-(5 x)^{2}\right]$
$=2(1+5 x)(1-5 x) \quad\left[a^{2}-b^{2}=(a+b)(a-b)\right]$
Leave a comment
All Study Material
