Factorise using HCF.
i 5x2 - 10x3 + 20x4
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Step-by-step explanation:
= (5×2) - (10×3) + (20×4)
= 5(1×2) - 5(2×3) + 5(4×4)
= 5(2) - 5(6) + 5(16)
= 5(2-6+16)
= 5×2 (1-3+8)
=========> 10 ( 1 - 3 + 8 )
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