49w² -112w + 64 first, you have to find 2 numbers that add up to equal -112, but also multiply together to get a product of 3136 (49 * 64)
two numbers that add to -112 and multiply to equal 3136 is -56 and -56 we can add them into the equation by putting them in for -112x
49w²-56w-56w+64
we now look at what the first 2 numbers have in common and what the last two numbers have in common 49w² and -56w both have w and 7 in common so we can divide 7w 7w(7w -8) -56w and 64 both have -8 in common so we can divide by -8 -8(7w-8) now we take the 2 numbers on the outside and bring down the numbers in the brackets
