\(\left(x+1\right)\left(x+4\right)\left(x+2\right)\left(x+3\right)+1\)
\(=\left(x^2+5x+4\right)\left(x^2+5x+6\right)+1\)
\(=\left(x^2+5x+4\right)^2+2\left(x^2+5x+4\right)+1\)
\(=\left(x^2+5x+4+1\right)^2\)
\(=\left(x^2+5x+5\right)^2\)
PTĐTTNT
(x+1)(x+2)(x+3)(x+4) - 24
I : PTĐTTNT
a)A= (x-1)(x+2)(x+7)-16
b) A= \(\left(x^2-x-2\right)^2+\left(x-2\right)^2\)
c) \(81x^4+4\)
d) \(\left(x^2-3\right)^2+16\)
help me
PTĐTTNT:
a) \(\left(x^2+x\right)^2-2\left(x^2+x\right)-15\)
b) \(\left(a+b+c\right)^3-a^3-b^3-c^3\)
c) \(x-1+x^{n+3}-x^n\)
d) \(2x^4-7x^3-2x^2+13x+6\)
I : PTĐTTNT
a) (2x+1)^2-(x-1)^2
I : PTĐTTNT
a) \(\left(x^2-x-2\right)^2+\left(x-2\right)^2\)
b) \(x^4+2019x^2+2018x+2019\)
c) \(x^4+2x^3+5x^2+4x-5\)
help me
I: PTĐTTNT
a) x^4+4x^2-5
b) 5x^3-5x^2y-10x^2+10xy
I : PTĐTTNT
A= \(\left(x^2-6x\right)^2-2\left(x-3\right)^2-81\)
B=\(x^4+y^4+z^4-2x^2y^2-2y^2z^2-2x^2z^2\)
help me !!!
PTĐTTNT: \(x^4+64\)
PTĐTTNT:
x3 + xy2 - 9xz2 - 2xyz
