solve the simultaneous equations x^2 + y^2 = 5 and 3x+1=y

Substitute in y to the first equationx2 + (3x+1)2 = 510x2 + 6x - 4 = 55x2+3x-2=0(5x-2)(x+1)x=2/5 or -1Sub these values of x into the first equationy=11/5 and -2

ID

Related Maths GCSE answers

All answers ▸

Here are the first four terms of a quadratic sequence: 11 26 45 68. Work out an expression for the nth term.


How do i factorise 20 + 10x?


Solve 2x-5=3x+4


In a sale, an item originally worth £140 is reduced by 15%. What is the new price of the item ?