Question

factorise = x² - 19x + 84​

Answer 1

x = (19 + 4)÷2

x = 7.5,11.5

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Answer 2

Answer:

$Your \: question \: is \\ </p><p></p><p>x2−19x+84 \\ </p><p></p><p>x^{2}-19x+84x2−19x+84 \\ </p><p></p><p>1.Use \: the \: sum-product \: pattern \\ </p><p></p><p>2−19+84 \\ </p><p></p><p>2−7−12+84 \\ </p><p></p><p></p><p></p><p>2.Common \: factor \: from \: the \: two \: pairs \\ </p><p></p><p>2−7−12+84 \\ </p><p></p><p>(−7)−12(−7) \\ </p><p></p><p></p><p>3.Rewrite \: in \: factored \: form \\ </p><p></p><p>(−7)−12(−7) \\ </p><p></p><p>(−12)(−7) \\ </p><p></p><p>Solution \\ </p><p></p><p>(−12)(−7) \\ </p><p></p><p>$

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