Rút gọn biểu thức :
a ) $\left(6x+1\right)^2+\left(6x-1\right)^2-2\left(1+6x\right)\left(6x-1\right)$
b ) $3\left(2^2+1\right)\left(2^4+1\right)\left(2^8+1\right)\left(2^{16}+1\right)$
c ) $x\left(2x^2-3\right)-x^2\left(5x+1\right)+x^2$
d ) $3x\left(x-2\right)-5x\left(1-x\right)-8\left(x^2-3\right)$
Loga
Sinh Học lớp 12
