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Simplify 48^1/2 :48^1/2=(124)^1/2=(434)^1/2=(4)^1/2(4)^1/2(3)^1/2=22*(3)^1/2=4(3)^1/2

An acid and metal react to form hydrogen and a salt.
For example:
Mg + 2HCl ----> MgCl2 + H2
1 mole of magnesium reacts with 2 moles of hydrochloric acid to form 1 mole of magnesium chl...

Can be solved in 3 ways:
Substitution - can rearrange equation 2 to for x = 2y-5. Then substitute this in to equation 1 to form, 3(2y-5)+2y = 9. Multiply out the brackets and rearrange to form 8y = 2...

When rearranging an equation, the most important thing to remember is that whatever you do to one side of the equation you must do to the other. In order to make y the subject you want to isolate it so t...

=(x-5)(x+5)