math, algebra
posted by jasmine20 .
How can i solve for this would it best to factor or use the quadratic formula.
solve: x^2+2x8=0
How about for this problem as well:
solve : x^2+7x1 = 0
in the first, can you think of two multipliers of 8 that have a sum of 2??
how about 4 and 2
so it factors!
in the second, are there any factors of 1 that have a sum of 7????
not very likely, so use the formula
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