Question

Bài 1: Thực hiện phép tính

g) (x − 2). (x + 2)

h) (3x + 1). (3x − 1)

i) (x²-1/2).(x²+1/2)

giup minh nha minh can gap

 

Answer 1

g) \(\left(x-2\right)\left(x+2\right)=x^2-4\)

h) \(\left(3x-1\right)\left(3x+1\right)=9x^2-1\)

i) \(\left(x^2-\dfrac{1}{2}\right)\left(x^2+\dfrac{1}{2}\right)=x^4-\dfrac{1}{4}\)

Answer 2

g: \(\left(x-2\right)\left(x+2\right)=x^2-4\)

h: \(\left(3x+1\right)\left(3x-1\right)=9x^2-1\)

i: \(\left(x^2-\dfrac{1}{2}\right)\left(x^2+\dfrac{1}{2}\right)=x^4-\dfrac{1}{4}\)