factorise f ( x ) = 4x³-12x²+14x-3 and g( x) = 2x - 1
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Step-by-step explanation:
G(x) = 2x-1
2x-1 = 0
2x = 1
x = 1/2
f(1/2) = 4(1/2)^3 - 12(1/2)^2 + 14x - 3
= 4(1/8) - 12(1/4) + 14x - 3
= 1/2 - 3 + 14x - 3
= 1/2 - 6 + 14(1/2)
= 11/2 + 7
= 12.5
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