Question

a, x³ -9x²+6x+16                d,27x³-27x²+18x-4

b,x³-6x²-x+30                     e,x²+2xy+y²-x-y-12

c,2x³-x²+5x+3                     f,(x+2).(x+3).(x+4).(x+5)-24

Answer 1

mk ghi đáp án sau đó bạn tự biến đổi, không ra ib mk

a)  \(x^3-9x^2+6x+16=\left(x-8\right)\left(x-2\right)\left(x+1\right)\)

b)  \(x^3-6x^2-x+30=\left(x-5\right)\left(x-3\right)\left(x+2\right)\)

c) \(2x^3-x^2+5x+3=\left(2x+1\right)\left(x^2-x+3\right)\)

Answer 2

mk làm tiếp

d)  \(27x^3-27x^2+18x-4=\left(3x-1\right)\left(9x^2-6x+4\right)\)

e)  \(x^2+2xy+y^2-x-y-12=\left(x+y-3\right)\left(x+y+4\right)\)

f)  \(\left(x+2\right)\left(x+3\right)\left(x+4\right)\left(x+5\right)-24=\left(x+1\right)\left(x+6\right)\left(x^2+7x+16\right)\)