Question

(x³-4x² - 5x - 2) ( x ²+ 2x- 1) - Multiply
​

Answer 1

Answer:

x⁵ - 2x⁴ -9x³- 6x²-5x³+ 5x - 2x² - 4x + 2

x⁵-2x⁴-14x³-8x² +1x+2

Answer 2

Given:

Multiply :

$\bf \it{(x^3 - 4x^2 - 5x - 2) (x^2 + 2x - 1)}$

Solution:

We can write the equation as:

$\therefore (x^2 + 2x - 1) (x^3 - 4x^2 -5x - 2)$

$\implies x^2(x^3 - 4x^2 - 5x -2) \\ + 2x(x^3 - 4x^2 -5x -2) \\ -1(x^3 - 4x^2 -5x -2)$

$\implies [x^5 - 4x^4 - 5x^3 - 2x^2] \\ + [2x^4 - 8x^3 - 10x^2 - 4x] \\ - [x^3 + 4x^2 + 5x + 2]$

On Cancelling and adding and subtracting,

$\implies x^5 - 2x^4 - 14x^3 - 8x^2 + x + 2$

Therefore,

Ans :$\it{\red{x^5 - 2x^4 - 14x^3 - 8x^2 + x + 2}}$