Expand and simplify (5a-2b)(3a-4b)
=(5a x 3a) + (5a x -4b) + (3a x -2b) + (-2b x -4b) =15a^2 - 20ab - 6ab + 8b^2 =15a^2 - 26ab + 8b^2
PI
Related Maths GCSE answers
All answers ▸Simplify (m-7)(m+3)/6(m+3)
Factorise the quadratic equation: x^2 + 5x + 6 = 0 and hence find the two solutions to the equation.
A cuboid has sides such that the longest side is two units more than the shortest side, and the middle length side is one unit longer than the shortest side. The total surface area of the cuboid is 52 units². Calculate the length of the shortest side.
In year 11, 3/7 of pupils go on holiday abroad in the summer break. Out of these, 1/3 go to France. Determine the ratio of pupils who go to France in summer to pupils who do not go to France in summer.