Quadratic Equations

Quantitative Aptitude (CDS) CDS Exam

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if 5x³ + 5x² - 6x + 9 is divided by (x + 3), then the remainder is

135

-135

-63

Explanation:

Let f(x) =5x³ + 5x² - 6x + 9 and g(x) = x+3
To find the remainder g(x) should be equal to zero
Therefore g(x) = x+3 => x = -3
Putting this value in f(x) we get
f(x) = 5(−3)3+5(−3)2−6(−3)+9
f(x) = - 63

By: Munesh Kumari

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