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Simplify: x3−3x2+9x−12−x3−7x2−8x−16.x^3-3x^2+9x-12-x^3-7x^2-8x-16.x3−3x2+9x−12−x3−7x2−8x−16.

Question

Simplify: $x^3-3x^2+9x-12-x^3-7x^2-8x-16.$

$10x^2+x-28$

$-10x^2+x+28$

$-10x^2+x-28$

$10x^2-x-28$

Solution

Correct option is C

Given:

$x^3-3x^2+9x-12-x^3-7x^2-8x-16.$

Solution:

$x^3-3x^2+9x-12-x^3-7x^2-8x-16.$

= $x^3-x^3-3x^2-7x^2+9x-8x-12-16$

= $-10x^2+x-28$

Thus the correct answer is (C)

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Simplify: $x^3-3x^2+9x-12-x^3-7x^2-8x-16.$

$10x^2+x-28$

$-10x^2+x+28$

$-10x^2+x-28$

$10x^2-x-28$

Correct option is C

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CBT-1 Full Mock Test 1

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Simplify: x3−3x2+9x−12−x3−7x2−8x−16.x^3-3x^2+9x-12-x^3-7x^2-8x-16.x3−3x2+9x−12−x3−7x2−8x−16.​​

​10x2+x−2810x^2+x-2810x2+x−28​​

​−10x2+x+28-10x^2+x+28−10x2+x+28​​

​−10x2+x−28-10x^2+x-28−10x2+x−28​​

​10x2−x−2810x^2-x-2810x2−x−28​​

Correct option is C

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Access ‘RRB Group D’ Mock Tests with

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Simplify: $x^3-3x^2+9x-12-x^3-7x^2-8x-16.$

$10x^2+x-28$

$-10x^2+x+28$

$-10x^2+x-28$

$10x^2-x-28$