Solve 0=X^2 +5x +4
0= (x + 4)(x + 1)
x= - 4
x= - 1
RW
Related Maths GCSE answers
All answers ▸y is inversely proportional to d^2 and when d = 10, y = 4. d is directly proportional to x^2 and when x = 2, d = 24. Find a formula for y in terms of x. Give your answer in its simplest form.
What is solution by substitution?
Factorize x^2 + 4x -5 and hence find the roots of the quadratic equation y = x^2 + 4x - 5.
1a) Simplify 2a^3 x a^5 1b) (4x^2)^3 1c) 2(3y+1) - 3(y-4)