book Maths Puzzle Numerical Ability

Find a number that is 32 more than its opposite

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book Other Question

I am trying to work out a problem and I am not sure how to work it. The problem was given to my class out of the book for extra credit.
The problem is: 2x2-x-21.

It is 2xsquared subtract x subtract 21
Thank You
Brittany Miller how do you put this equation in standard form and graph it?
y=(x-1)squared-3