factorise 2x³ - x² - 13x - 6
Answers
Answered by
0
Answer:
x = 0.54
Step-by-step explanation:
- 2x³- x² - 13x - 6
- 2x¹ - 13x - 6
- -11x-6 = 0
- -11x = 6
- x = 6/11
- x = 0.54
Answered by
0
Answer:
wrong question. rightquestion is 2x³+x²-13x-6
(x-2)(x+3)(2x-1)
Step-by-step explanation:
f(x)=2x³+x²-13x-6
for x=2
f(2)=2×2³+2²-13×2-6=0
it means x=2 is a factor of f(x)
(x-2)=0
f(x) / f(2) = 2x²+5x-3=2x²+6x-x-3=2x(x+3)-1(x+3)= (2x-1)(x+3)
Factorise of
2x³+x²-13x-6= (x-2)[(2x-1)(x+3)]
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