$ 1 (a) Simplify 3x (4x – 5) + 3 and find its values for (i) x = 1/2
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Answer:
if ,x = 1/2
3x(4x-5)+3
= 3/2(2-5)+3
= 3/2 × - 3 +3
= -9/2+3
= -3/3
= -1
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