Five mark example problems - II — task. Mathematics State Board, Class 10.

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1. Find the square root of \(64x^4 - 16x^3 + 17x^2 - 2x + 1\).

Answer:

The square root is

$|{8 x}^{2} + x - 1|$
$|{8 x}^{2} - x + 1|$
$|{8 x}^{2} + x + 1|$
$|{8 x}^{2} - x - 1|$

2. If \(9x^4 + 12x^3 + 28x^2 + ax + b\) is a perfect square, find the values of \(a\) and \(b\).

Answer:

\(a =\)

\(b =\)

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