Question

factorise:5-20x² please

Answer 1

Answer:

$5(-4^{2} )$

Answer 2

Answer:

Step-by-step explanation:

5(1-4x^2)

5( 1^2 - 2x^2)

In the form a^2-b^2 = (a+b) (a-b)

5(1+2x)(1-2x)