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4.3 FACTORISATION USING ALGEBRAIC IDENTITIES

English 12 Public

4.3 FACTORISATION USING ALGEBRAIC IDENTITIES

Study Slideshow

4x^2 - 9y^2

(2x + 3y)(2x - 3y)

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49a^2 - 14ab + b^2

(7a - b)^2

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36p^2 - 49q^2

(6p + 7q)(6p - 7q)

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x^4 - 16

(x^2 + 4)(x + 2)(x - 2)

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9x^2 + 12xy + 4y^2

(3x + 2y)^2

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16x^2 - 40xy + 25y^2

(4x - 5y)^2

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100a^2 - b^2

(10a + b)(10a - b)

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9p^4 - 6p^2q^2 + q^4

(3p^2 - q^2 )^2

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121x^2 - 49y^2

(11x + 7y)(11x - 7y)

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x^4 - 10x^2 + 9

(x^2 - 9)(x^2 - 1) = (x + 3)(x - 3)(x + 1)(x - 1)

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x^4 - 6x^2 + 9

(x^2 - 3)^2

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102^2 - 98^2

(102 + 98)(102 - 98) = 200 × 4 = 800

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