What are the roots of the graph of this equation: x^2 + 9x + 18 = 0
Roots are where the graph crosses the x-axis, which we find by solving the equation to find x. x = -6 or x = -3
MH
Related Maths GCSE answers
All answers ▸The functions f and g are defined on R , the set of real numbers by f(x) = x^2 - 5x +2, and g(x) = 1 - x. Find h(x) = f(g(x)), and j(x) = g(f(x)).
How do we solve simultaneous equations, say for example x + 4y = 20 and 2x - 2y = 10 ?
How to solve a simultaneous equation?
Simplify fully 3/(2x + 12) - (x - 15)/(x^2 - 2x - 48)