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9 questions from this quiz
(a+b)(a−b)(a+b)(a-b)(a+b)(a−b)
No, it must be learnt off
25a2b225a^2b^225a2b2
(3)(3)(3)(3)(3)(3)
(y+10)(y−10)(y+10)(y-10)(y+10)(y−10)
(9x2+4y4)(9x2−4y4)(9x^2+4y^4)(9x^2-4y^4)(9x2+4y4)(9x2−4y4)
Use HCF to get 2x(x2−25)2x(x^2-25)2x(x2−25)
2x(x+5)(x−5)2x(x+5)(x-5)2x(x+5)(x−5)
A minus sign (difference)
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