The square of 4A - the square of 8A + 4B + 4AB + B solve
4a²-8a+4b+4ab+b²
=(4a²+4ab+b²)-8a+4b
=(2a+b)²-8a+4b
How many significant numbers are there in the cubic power of 3.14 times 10
3
3.08 times 10 to the third power, which one has several significant numbers
Three significant digits, to ten