Factorise x^2+3x-4
Answer is:(x-1)(x+4)
TA
Related Maths GCSE answers
All answers ▸A curve (a) has equation, y = x^2 + 3x + 1. A line (b) has equation, y = 2x + 3. Show that the line and the curve intersect at 2 distinct points and find the points of intersection. Do not use a graphical method.
From factorising a^2-b^2 hence or otherwise simplify fully (x^2 + 4)^2 - (x^2-2)^2
Find the points of intersection of the line y+x=8 and a circle with centre at (3,-2) and radius 5.
Solve the equation 3x^2+2x-3=3.