Question

factorise x cube + 5 x square - 4 x minus 20​

Answer 1

${x}^{3} + 5 {x}^{2} - 4x - 20 \\ \\ {x}^{2} (x + 5) - 4(x + 5) \\ \\ (x + 5)( {x}^{2} - 4) \\ \\ (x + 5)(x - 2)(x + 2)$

Answer 2

Step-by-step explanation:

x³+5x²-4x-20

x²(x+5)-4(x+5)

(x+5)(x²-4)

(x+5)(x²-2²)

(x+5)(x+2)(x-2). :.a²-b²=(a-b)(a+b)

I HOPE IT WILL HELP YOU