Factorise:(0.7)2 – (0.3)2 – InterviewSolution

1.	Factorise:(0.7)2 – (0.3)2
Answer» (0.7)² – (0.3)² Identity a² – b² = (a + b)(a – b) = (0.7 + 0.3)(0.7 – 0.3) = (1.0)(0.4) = 0.4

Factorise:(0.7)2 – (0.3)2

Answer»

(0.7)² – (0.3)²

Identity a² – b² = (a + b)(a – b)

= (0.7 + 0.3)(0.7 – 0.3)

= (1.0)(0.4)

= 0.4