Question

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Answer 1

Answer:

1-d

2-b

3-c

4-d

5-c

6-a

7-

8-d

9-b

10-c

Step-by-step explanation:

hope it helps

Answer 2

$\qquad\qquad\boxed{\sf{\pmb {M}ultiple~\pmb{C}hoice~\pmb{Q}uestions}}$

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1. ${\sf{\sqrt{2}}}$is a polynomial of degree

• (a) 2

• (b) 0

• (c) 1

• (d) ${\sf{\dfrac{1}{2}}}$ ✓

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2. If p (x) = ${\sf{x^2~-~2\sqrt{2}}}$+ 1, then p ${\sf{(2\sqrt{2})}}$ is a equal to

• (a) 0

• (b) 1 ✓

• (c) ${\sf{4\sqrt{2}}}$

• (d) ${\sf{8\sqrt{2}~+~1}}$

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3. If x + 1 is a factor of the polynomial 2x² + kx, then the value of k is

• (a) -3

• (b) 4

• (c) 2 ✓

• (d) -2

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4. The values of 249² - 248² is

• (a) 1²

• (b) 477

• (c) 487

• (d) 497 ✓

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5. If ${\sf{x^2~+\dfrac{1}{x^2}}}$= 7, then the value of ${\sf{x³~ +~ \dfrac{1}{x^3}}}$is

• (a) 27

• (b) 9

• (c) 18 ✓

• (d) 36

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6. If a + b + c = 9 and ab + bc + ca = 40, then the value of a² + b² + c² is

• (a) 1 ✓

• (b) 2

• (c) 3

• (d) 4

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7. Which one of the following algebraic expressions is a polynomial invariable of x?

• (a) ${\sf{x^2~+~\dfrac{2}{x^2}}}$✓

• (b) ${\sf{\sqrt{x}~+~\dfrac{1}{\sqrt{x}}}}$

• (c) ${\sf{x^2~=~\dfrac{3x^{3/2}}{\sqrt{x}}}}$

• (d) None of these

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8. One of the dimensions of the cuboid whose volume is 36Kx²y - 21Kxy² + 3Ky³, is

• (a) 3Ky

• (b) 4x - y

• (c) 3x - y

• (d) All of these ✓

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9. (x + 1) is a factor of the polynomial

• (a) x³ + x² - x + 1

• (b) x³ + x² + x + 1 ✓

• (c) x⁴ + x³ + x² + 1

• (d) x⁴ + 3x³ + 3x² + x + 1

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10. If 49x² - b = ${\sf{~\Bigg(7x~+~\dfrac{1}{2}\Bigg) \Bigg(7x~-~\dfrac{1}{2}\Bigg), }}$then the value of b is

• (a) 0

• (b) ${\sf{\dfrac{1}{\sqrt{2}}}}$

• (c) ${\sf{\dfrac{1}{4}}}$✓

• (d) ${\sf{\dfrac{1}{2}}}$