I honestly have no idea, I can only assume that it is a typing error in the book.
Completing this square here guys!
5x² + 5x + 11
Heres how i went through it;
5[x² + x] + 11
5[(x + 1/2)² - 1/4] + 11
5(x + 1/2)² - 5/4 + 11
5(x + 1/2)² + 39/4
but my book is giving me the answer of
5(x - 1/2)² + 39/4
and i really can't figure out why. probably something stupidly small, that i've missed, but i can't see it!
thanks for any help!
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