Manipulation Of Quadratic Expressions
Bayani Gaba-gaba
Quadratic expressions appear everywhere in mathematics, from modelling projectile trajectories to optimising areas and profits. Mastering the art of reshaping them through factorisation and completing the square gives you direct access to a quadratic's roots, vertex and symmetry, all without reaching for the formula.
In this topic you will learn two powerful rewriting techniques: factorising a quadratic into a product of linear factors and completing the square to reveal the turning point. Both are essential tools for the rest of the 4PM1 course and appear frequently in Edexcel exam questions.
Manufura
- Factorise quadratic expressions
- Complete the square for quadratic expressions
Takardar Darasi
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- What is the factorised form of x^2 + 7x + 10? A) (x + 2)(x + 5) B) (x + 1)(x + 10) C) (x - 2)(x - 5) D) (x + 3)(x + 4) Answer: A
- Which expression is equivalent to (x + 4)^2 - 9? A) x^2 + 8x + 7 B) x^2 + 8x + 25 C) x^2 + 4x + 7 D) x^2 + 16x + 7 Answer: A
- What is the vertex of the parabola y = (x - 3)^2 + 2? A) (3, 2) B) (-3, 2) C) (3, -2) D) (-3, -2) Answer: A
- Factorise 9x^2 - 16. A) (3x + 4)(3x - 4) B) (9x + 4)(x - 4) C) (3x + 8)(3x - 2) D) (3x - 4)^2 Answer: A
- When completing the square for x^2 - 12x + 5, what value is subtracted inside the bracket? A) 36 B) 12 C) 6 D) 144 Answer: A
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Zazzage manhajar Green Bridge CBT a wayar ka ko kwamfyuta ka don samun cikakkiyar bayanan darasi, tambayoyin aiki, da ƙari.
Akwai a cikin manhajar Green Bridge
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