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Factorise fully: 3x - 9x^2

3x(1-3x)

JV

Answered by Jake V. • Maths tutor

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Expand (x+3)(x+6)

Please expand the brackets in the following equation to get a quadratic equation. Then, please show using the quadratic formula that the solutions to the equation are x=3 and x=5. Here is the starting equation: (x-3)(x-5)=0

Nadia has £5 to buy pencils and rulers. Pencils are 8p each. Rulers are 30p each. She says “I will buy 15 pencils. Then I will buy as many rulers as possible. With my change I will buy more pencils.” How many pencils and how many rulers does she buy?

Find the coefficient of the constant term of the expression (2x+1/(4x^3 ))^8

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