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Factorisation by Regrouping Terms

Find value of...

Question

Find value of $p (x) = 5 x^{2} - 3 x + 7$ , at $x = 1$ .

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Solution

Find the value of -1
$P (x) = 5 x^{2} - 3 x + 7$ at x = 1
$P (1) = 5 (1)^{2} - 3 (1) + 7$
$= 5 - 3 + 7$
$P (1) = 9 .$

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