Solve the simultaneous equations: ...

Two methods for simultaneous equations: making them equal to each or substitution. If they both have a common term, for example "y", then you can do substitution, otheriwise find a way to make them equal to each other. Solve to find either x or y, and then solve the other one. Always remember to check you answers by plugging in all unknown terms back into all the equations given, not just one.

DV

Related Maths A Level answers

All answers ▸

(C3) Show that 4csc^2(x) - cot^2(x) = k can be expressed as sec^2(x) = (k-1)/(k-4) where k != 4


how to write down the differential equation from a word problem, involving rate of change.


∫(3x+4)2dx


What is the tangent line to the curve y = x^3+4x+5 at the point where x = 2?