Answers>Maths>A Level>Article

Solve the simultaneous equations y + 4x + 1 = 0 and y^2 + 5x^2 + 2x = 0

y=-4x-1
(-4x-1)^2 +5x^2 +2x=0

16x^2 +8x +1 +5x^2 +2x=0

21x^2 +10x + 1 =0
(7x+1)(3x+1)=0

x=-1/7 or -1/3

y= -3/7 or 1/3

DJ

Related Maths A Level answers

All answers ▸

How do I differentiate implicitly?

Seb G. avatarAnswered by Seb G.

Differentiate y = x^3− 5x^2 + 3x

Georgia D. avatarAnswered by Georgia D.

Integrate 1 / x(2sqrt(x)-1) on [1,9] using x = u^2 (u > 0).

Tutor69809 D. avatarAnswered by Tutor69809 D.

Express x^2 - 7x + 2 in the form (x - p)^2 + q , where p and q are rational numbers.

Catherine P. avatarAnswered by Catherine P.