factorise..show working a)9-4t² b)9+35x-4x² c)25t²-4
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Step-by-step explanation:
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Answer:
a) (3-2t)(3+2t)
b) (9-x)(1+4x)
c) (5t-2)(5t+2)
Step-by-step explanation:
b) 9 +36x - x -4 x^2
9(1+4x) - x(1+4x)
(9-x)(1+4x)
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