In the polynomial p(x) = x2 - 10x + 2 what number should be take

1.	In the polynomial p(x) = x2 - 10x + 2 what number should be taken as x to get the least possible number at p(x)? (1) 10 (2) 5 (3) 0 (4) – 5
Answer» (2) 5 x² - 10x + 2 = x² - 10x + 25 - 23 = (x - 5)² - 23 Minimum at x = 5

In the polynomial p(x) = x2 - 10x + 2 what number should be taken as x to get the least possible number at p(x)? (1) 10 (2) 5 (3) 0 (4) – 5

Answer»

(2) 5

x² - 10x + 2 = x² - 10x + 25 - 23

= (x - 5)² - 23 Minimum at x = 5

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In the polynomial p(x) = x2 - 10x + 2 what number should be taken as x to get the least possible number at p(x)? (1) 10 (2) 5 (3) 0 (4) – 5

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