The length of a rectangle is (x+4)(x+4)(x+4) cm and its width is (8−x)(8-x)(8−x) cm, where 0<x<80<x<80<x<8.
Find the set of values of x x\,x for which the area of the rectangle is greater than 27 cm2^22.
8 exam-style questions on OCR A Level Maths 1.2.7 Inequalities. Each one has a worked solution and a mark scheme showing where the marks go.