2х2 +6 x +4
Factorise by first taking out a common factor

2x² + 6x + 4

= 2(x² + 3x + 2)

= 2(x² + 2x + x + 2)

= 2[x(x + 2) + (x + 2)]

= 2(x + 1)(x + 2)

Step-by-step explanation:

not only in mathematics, scientific proof also are required in the other field of science. also maths proofs are of particular structure, containing steps and logics. so proving is like doing science, it is science. that's why it is important to prove. 

an inaccurate proof leads to errors, or stating results that are not accurate.  which wil mess the probelm up you dont want this

answer is because 4×10=40

and 98×4= is 392

40,392