Question

show step by step:

(x²+ 6x - 4) - ( x² + 6x -4)

Answer 1

Answer:

$(x^2+ 6x - 4) - ( x^2 + 6x -4)=x^2+ 6x - 4 - x^2 - 6x +4=0;$

step 1 : $x^2+ 6x - 4 - x^2 -6x +4$ (open the brackets);

step 2: $\cancel{x^2}+ \cancel{6x} - \cancel{4} - \cancel{x^2} -\cancel{6x} +\cancel{4}$ (we cancel the same terms with opposite signs);

step 3: 0 (we get the result).