Solve the simultaneous equations: x2 + y2 = 20, 3x=2-y
x = -4/5 or 2
y = 22/5 or -4
IA
Related Maths GCSE answers
All answers ▸a x 10^4 + a x 10^2 = 24 240 where a is a number. Work out a x 10^4 - a x10^2 Give your answer in standard form.
Factorise X^2-X-20
Solve the simultaneous equations: y=5-x and y=x+1.
a)By completing the square, prove the quadratic formula starting from ax^2+bx+c=0, b) hence, or otherwise solve 3x^2 + 7x -2= 9, to 3s.f.