Solve the inequality x2+8x>20x^2 + 8x > 20x2+8x>20, giving your answer in set notation.
Find the set of values for x x\,x which satisfy both of the inequalities x2+8x>20x^2 + 8x > 20x2+8x>20 and 18+3x<23+x18 + 3x < 23 + x18+3x<23+x
302 exam-style questions on WJEC A Level Maths 1.2 Algebra and Functions, covering 1.2.1 Algebra and Functions, 1.2.2 Algebra and Functions, 1.2.3 Algebra and Functions, 1.2.4 Algebra and Functions, 1.2.5 Algebra and Functions, 1.2.6 Algebra and Functions, 1.2.7 Algebra and Functions, 1.2.8 Algebra and Functions, 1.2.9 Algebra and Functions, 1.2.10 Algebra and Functions, 1.2.11 Algebra and Functions, and 1.2.12 Algebra and Functions. Each one has a worked solution and a mark scheme showing where the marks go.