Question

3x-2totu la 2 formula

Answer 1

(a+ b)^2 =a^2+2ab+b^2

Answer 2

$(3x-2)^2=(3x)^2-2 \cdot 3x \cdot 2+2^2=9x^2-12x+4 \\ \boxed{Formula:(a-b)^2=a^2-2ab+b^2}$