How to add the squares? The quadratic power of x plus the quadratic power of X. and the square of constant and unknown How about the quadratic power of 9x + 4x

How to add the squares? The quadratic power of x plus the quadratic power of X. and the square of constant and unknown How about the quadratic power of 9x + 4x

Use the rule of merging similar terms: X & # 178; + X & # 178; = 2x & # 178;
9x + 4x & # 178; can't count, because 9x and 4x & # 178; are not of the same kind. Only the same kind can be merged