Question

Factorise 12x+y^2-z^2-6xy+20yz-6zx​

Answer 1

Answer:

SOLUTION STEPS

6xy−y

2

+12xz−2yz

Do the grouping 6xy−y

2

+12xz−2yz=(6xy−y

2

)+(12xz−2yz), and factor out y in the first and 2z in the second group.

y(6x−y)+2z(6x−y)

Factor out common term 6x−y by using distributive property.

(6x−y)(y+2z)

Answer 2

Answer:

Ammonia is NH3 so there are 3 hydrogen and 1 nitrogen so we will add there molar masses to get atomic mass of Nitrogen. So Nitrogen is 14 and hidrogen is 3x1=3. i.e, 14+3=17g.

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