Question 2(i)
Find the product :
$(5 - 2 x) (3 + x)$

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Solution

$(5 - 2 x) (3 + x) = 5 \times (3 + x) - 2 x (3 + x)$
$= 5 \times 3 + 5 \times x - 2 x \times 3 - 2 x \times x$
$= 15 + 5 x - 6 x - 2 x^{2} = 15 - x - 2 x^{2}$

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