An exothermic chemical reaction.
associative property
x2+bx+ax+ab = x2+ax+bx+ab = x(x+a)+b(x+a) = (x+a)(x+b)
30 + ab + 6b + 5a = 5(a+6) + b(a+6) = (b+5)(a+6)
ab-2ac+b^2-2bc
I suppose that you think to synthesis reaction.
This kind of chemical reaction is usually called "displacement" and sometimes "substitution".
Double replacement
AB pos or AB neg
An exothermic chemical reaction.
needing sum helo here
When many were taught chemistry in the 1970s this was called a double decomposition reaction. It is now called a salt metathesis reaction and also double displacement reaction. There are examples and more information at the related link.
The chemical reaction consists of reactants A and B reacting to form product AB. A and B are the reactants, while AB is the product.
yes because ab plus bc is ac
No - a pos can not donate blood to a negative
Commutativity.
2ab