This is a differnce of 2 perfect squares
a²-b²=(a-b)(a+b)
so
9x²-64=(3x)²-(8)²=(3x-8)(3x+8)
factors are (3x-8) and (3x+8)
Answer:
the first one
Step-by-step explanation:
2m+1
42% ................................
Like 42-19??????????????
cause the answer for that is 23
