Question

factoise
1) x⁶ - 26x³ -27
2) x³ - 125​

Answer 1

Answer:

1) 3√2,3√-1

2) x^3-125-15x(x+5)

Step-by-step explanation:

1) x^6-26x^3-27

x^6-(27-1)x^3-27

x^6-27x^3+x^3-27

x^3(x^3-27)+1(x^3-27)

(x^3-27)(x^3+1)

X=3√2and X=3√-1

2) x^3-125

x^3-(5)^3

(x-5)^3

x^3-125-15x(x+5)

hence factorised