(9x^4 - 8x^3 - 12x) x (3x) is equal to: 1. 27x^5 - 24x^4 + 36x^2 2. 27x^5 - 24x^4 - 36x^2 3. 27x^5 + 24x^4 - 36x^2 4. 27x^5 + 24x^4 + 36x^2

(3x) (9x 4 - 8x 3 - 12x) = 3x 9x 4 - 3x 8x 3 - 3x 12x = 27x (4+1) - 24x (3+1) - 36x (1+1) = 27x^5 - 24x^4 - 36x^2 Hence, option 2 is the correct option.

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Mathematics

(9x⁴ - 8x³ - 12x) x (3x) is equal to:
27x⁵ - 24x⁴ + 36x²
27x⁵ - 24x⁴ - 36x²
27x⁵ + 24x⁴ - 36x²
27x⁵ + 24x⁴ + 36x²

Algebraic Expressions

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Answer

(3x) $\times$ (9x⁴ - 8x³ - 12x)

= 3x $\times$ 9x⁴ - 3x $\times$ 8x³ - 3x $\times$ 12x

= 27x⁽⁴⁺¹⁾ - 24x⁽³⁺¹⁾ - 36x⁽¹⁺¹⁾

= 27x^5 - 24x^4 - 36x^2

Hence, option 2 is the correct option.

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Mathematics

(9x⁴ - 8x³ - 12x) x (3x) is equal to:
27x⁵ - 24x⁴ + 36x²
27x⁵ - 24x⁴ - 36x²
27x⁵ + 24x⁴ - 36x²
27x⁵ + 24x⁴ + 36x²

Algebraic Expressions

Answer

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Mathematics

(9x4 - 8x3 - 12x) x (3x) is equal to:27x5 - 24x4 + 36x227x5 - 24x4 - 36x227x5 + 24x4 - 36x227x5 + 24x4 + 36x2

Algebraic Expressions

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(9x⁴ - 8x³ - 12x) x (3x) is equal to:
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27x⁵ + 24x⁴ - 36x²
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How much less 2a² + 1 is than 3a² - 6 ?

If x = 6a + 8b + 9c; y = 2b - 3a - 6c and z = c - b + 3a; find :
(i) x + y + z
(ii) x - y + z
(iii) 2x - y - 3z
(iv) 3y - 2z - 5x

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3x³ + 4x² + 6
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3x³ - 4x² - 6
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$\Big(\dfrac{10}{3}xy^2z\Big)$ x $\Big(-\dfrac{9}{5}x^2z\Big)$ is equal io:
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