The second choice should be correct
Answer:
20
Step-by-step explanation:
there are 10 2s
2×10 =20
Recognize the differnce of 2 perfect sqares
recall that a²-b²=(a-b)(a+b)
so
169x²-64=
(13x)²-(8)²=
(13x-8)(13x+8)
Answer:
fraction 1 over 2 the difference of 734 and 246.