there's 2 I'm struggling with (solve the simultaneous equations):
1. x+y=2 and y=x^2+2y^2=11
2. 3y-x+6 and 4x^2+9y^2=36
Taken from my AS level bridging course booklet, if anyone's wondering.
Don't mess around with the complicated expressions, rearrange the linear ones for x or y and substitute into the complex ones, simplify and you'll probably form a quadratic for the values of x or y, then resubstitute the values you get back into the linear equations to get the corresponding x or y coordinates... Did that help?
Don't mess around with the complicated expressions, rearrange the linear ones for x or y and substitute into the complex ones, simplify and you'll probably form a quadratic for the values of x or y, then resubstitute the values you get back into the linear equations to get the corresponding x or y coordinates... Did that help?