Solving quadratic equations using the factorisation method.
The Form of a quadratic equation where a ≠ 0ax2+ bx + c = 0In order to solve we need to create one term made up of factors.One or more of these factors must equal zero.Questions we will work through:10x2 + 5x = 02x2-x -3 = 04 + 3x = x2x2- 9 = 0Solution Steps:Check if it’s in the correct formCheck to see if it’s got a common factor Factorise accordinglySolve each factor for x = 0
CE
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There are 14 boys in a class and 16 girls. The Mean height of the class is 1.6m, the mean of the girls is 1.5m what is the mean height of the boys?
f(x) = 3x - 2a || g(x) = 2ax + 1 || fg(x) = 2x + b/2
40 students were surveyed: 20 have visited France 15 have visited Spain 10 have visited both France and Spain. Use this information to complete a Venn Diagram