Bài 1:
a) \(25x^4-\frac{1}{9}y^2\)
\(=\left(5x^2\right)^2-\left(\frac{1}{3}y\right)^2\)
\(=\left(5x^2-\frac{1}{3}y\right).\left(5x^2+\frac{1}{3}y\right)\)
c) \(x^2-3\)
\(=x^2-\left(\sqrt{3}\right)^2\)
\(=\left(x-\sqrt{3}\right).\left(x+\sqrt{3}\right)\)
d) \(x^2-16x^2y^2z^2\)
\(=x^2-\left(4xyz\right)^2\)
\(=\left(x-4xyz\right).\left(x+4xyz\right)\)
Chúc bạn học tốt!
b, \(\left(x+5\right)y^2-\left(x+5\right)3\)
\(=\left(x+5\right)\left(y^2.3\right)\)
b, \(\left(x+5\right)y^2-\left(x+5\right)3\)
\(=\left(x+5\right)\left(y^2+3\right)\)
