Can someone help with this question please
S ant t are positive integers. (x+s)(x-t) is expanded and simplified. The answer is x^2+kx-40, where k is a positive integer.work out the smallest possible value of k?
Unfortunately no, I'm not smart enough to help
All I can give you is some good old
All I can give you is some good old
Original post by the bear
expand the brackets and simplify.
then compare the x term with kx
and the number term with -40
then compare the x term with kx
and the number term with -40
Do we have to use the quadratic formula to solve?
Original post by Patricia lopes
Do we have to use the quadratic formula to solve?
no... that is not necessary... just remove the brackets, simplify and compare.
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